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ARTICLES

Syncom employees have contributed to the following articles:

 

2011

Resolution of Praziquantel

Michael Woelfle, Jean-Paul Seerden, Jesse de Gooijer, Kees Pouwer, Piero Olliaro, Matthew H. Todd

PLoS Negl Trop Dis 2011, 5(9), e1260

 

Open science is a research accelerator

Michael Woelfle, Piero Olliaro and Matthew H. Todd

Nature Chemistry, 2011, 3, 745-748

 

Crystallization Techniques to Obtain Pure Enantiomers: From Resolution to Grinding

R.M. Kellogg, M.S. Leeman

Comprehensive Chirality, in press

 

2010

Attrition-enhanced total resolution leads to homochiral families of amino acid derivatives

M. Leeman, J. M. de Gooier, K. Boer, K. Zwaagstra, B. Kaptein and R. M. Kellogg.

Tetrahedron: Asymmetry, 2010, 21, 1191

 

Efficient Havinga-Kondepudi resolution of conglomerate amino acid derivatives by slow cooling and abrasive grinding

M. Leeman, W. L. Noorduin, A. Millemaggi, E. Vlieg, H. Meekes, W. J. P. van Enckevort, B. Kaptein and R.M.Kellogg.

Cryst. Eng. Comm. 2010, 12, 2051

 

Enantioselective Symmetry Breaking Directed by the Order of Process Steps

W.L. Noorduin, H. Meekes, W.J. P. van Enckevort, B. Kaptein, R.M. Kellogg, E. Vlieg

Angew. Chem. Int. Ed., 2010, 49, 2539-2541

 

Scaling Up Attrition-Enhanced Deracemization by Use of An Industrial Bead Mill in a Route to Clopidogrel (Plavix)

W.L.Noorduin, P. van der Asdonk, A.A.C. Bode, H. Meekes, W.J.P. van Enckevort, E. Vlieg, B. Kaptein, M.W. van der Meijden, R.M.Kellogg, G.Deroover

Organic Process Research & Development 2010, 14, 908-911

 

The Driving Mechanism Behind Attrition-Enhanced Deracemization

W.L. Noorduin, W.J.P. van Enckevort, H. Meekes, B. Kaptein, R.M. Kellogg, J.C. Tully, J.M. McBride, E. Vlieg

Angew. Chem. Int. Ed., 2010, 49, 8435-8438

 

Practical Aspects of Carbon Carbon Cross-Coupling Reactions Using Heteroarenes

Vincent F. Slagt, Andre H. M. de Vries, Johannes G. de Vries and Richard M. Kellogg

Organic Process Research & Development 2010, 14, 30–47

 

Biotransformation-mediated synthesis of (1S)-1-(2,6-dichloro-3-fluorophenyl)ethanol in enantiomerically pure form

Carlos A. Martineza, Erik Keller, Renzo Meijer, Gerard Metselaar, Gerlof Kruithof, Curtis Moorec, Pei-Pei Kung

Tetrahedron: Asymmetry 2010, 21, 19, 2408-2412

 

2009

Affinity-enhanced purification of human antibodies by aqueous two-phase extraction.

Azevedo, A.M., Rosa, P.A.J., Ferreira, I.F. , Pisco, A.M.M.O. , de Vries, J. , Korporaal, R. , Visser, T.J. , Aires-Barros, M.R.

Separation and Purification Technology, 65 (1), p.31-39, Feb 2009

 

Attrition-Enhanced Deracemization in the Synthesis of Clopidogrel; A Practical Application of a New Discovery

M.W. van der Meijden, M. Leeman, E. Gelens, W.L. Noorduin, H. Meekes, W.J.P. van Enckevort, B. Kaptein, E. Vlieg, R.M. Kellogg

Organic Process Research & Development 2009, 13,1195

 

Complete Chiral Resolution Using Additive-Induced Crystal Size Bifurcation During Grinding

W.L. Noorduin, P. van der Asdonk, H. Meekes, W.J.P. van Enckevort, B. Kaptein, M. Leeman, R.M. Kellogg, E. Vlieg

Angew. Chem. Int. Ed., 2009, 48, 3278

 

Complete Chiral Symmetry Breaking of an Amino Acid Derivative Directed by Circularly Polarized Light

W.L. Noorduin, A.A.C. Bode, M. van der Meijden, H. Meekes, A.F. van Etteger, W.J.P. van Enckevort, P.C.M. Christianen, B. Kaptein, R.M. Kellogg, T. Rasing, E. Vlieg

Nature Chemistry, 2009, 1, 729-732

 

Downstream processing of human antibodies integrating an extraction capture step and cation exchange chromatography.

Azevedo AM, Rosa PA, Ferreira IF, de Vries J, Visser TJ, Aires-Barros MR.

J Chromatogr B Analyt Technol Biomed Life Sci. 2009 Jan 1;877(1-2):50-8.

 

Fast Attrition-Induced Deracemization of Naproxen by a Gradual in situ Feed

W.L. Noorduin, B. Kaptein, H. Meekes, W.J.P. van Enckevort, R.M. Kellogg, E. Vlieg

Angew. Chem. Int. Ed., 2009, 48, 4581

 

From Ostwald Ripening to Single Chirality

W,L. Noorduin, E.Vlieg, R.M. Kellogg, B. Kaptein

Angew. Chem. Int. Ed., 2009, 48, 9600-9606

 

Nucleation Inhibition in Attrition-Enhanced Pope-Peachey Type of Diastereomeric Resolutions

M. Leeman, B. Kaptein and R. M. Kellogg

Tetrahedron: Asymmetry, 2009, 20, 1363.

 

The Resolution of 2-Hydroxy-5,5-dimethyl-4-phenyl-1,3,2-dioxaphosphorinan 2-Oxide (Phencyphos) by Preferential Crystallization

M. Leeman, F. Querniard, T. R. Vries, B. Kaptein and R. M. Kellogg

Organic Process Research & Development 2009, 13, 1379.

 

Synthesis of activated pyrimidine ribonucleotides in prebiotically plausible conditions

Kellogg, R. M.

Chemtracts (2009), 22(6), 210-213

 

Total Synthesis of a chlorosulpholipid cytotoxin associated with seafood poisoning

Kellogg, R. M.

Chemtracts (2009), 22(5), 163-166

 

2008

Attrition-Enhanced Deracemization of an Amino Acid Derivative That Forms an Epitaxial Racemic Conglomerate

B.Kaptein, W.L. Noorduin, H. Meekes, W.J.P. van Enckevort, R.M.Kellogg, E. Vlieg

Angew. Chem. Int. Ed., 2008, 47, 7226

 

Complete Deracemization by Attrition-Enhanced Ostwald Ripening Elucidated

W.L. Noorduin, H. Meekes, W.J.P. van Enckevort, A. Millemaggi, M. Leeman, B. Kaptein, R.M. Kellogg, E. Vlieg

Angew. Chem. Int. Ed., 2008, 47, 6445-6447

 

Emergence of a Single Solid Chiral State from a Nearly Racemic Amino Acid Derivative

W.L. Noorduin, T. Izumi, A. Millemaggi, M. Leeman, H. Meekes, W.J.P. van Enckevort, R.M. Kellogg, B. Kaptein, E. Vlieg, D.G. Blackmond

J. Am. Chem. Soc., 2008, 130, 1158-1159

 

Explanation for the Emergence of a Single Chiral Solid State During Attrition-Enhanced Ostwald Ripening: Survival of the Fittest

W.L. Noorduin, H. Meekes, A.A.C. Bode, W.J.P. van Enckevort, B. Kaptein, R.M. Kellogg, E. Vlieg

Cryst. Growth Des., 2008, 8, 1675-1681

 

Large-Scale Synthesis of the Glucosylceramide Synthase Inhibitor N-[5-(Adamantan-1-yl-methoxy)-pentyl]-1-deoxynojirimycin

T. Wennekes, B. Lang, M. Leeman, G. A. van der Marel, E. Smits, M. Weber, J. van Wiltenburg, M. Wolberg, J. M. F. G. Aerts, H. S. Overkleeft

Org. Process Res. Dev. 2008, 12, 414

 

Structural Aspects of Nucleation Inhibitors for Diastereomeric Resolutions and the Relationship to Dutch Resolution

M. Leeman, G. Brasile, E. Gelens, T. Vries, B. Kaptein, R. Kellogg

Angew. Chem. Int. Ed., 2008, 1287-1290

 

2007

Affinity partioning of human antibodies in aqueous two phase systems.

P.A.J. Rosa, A.M. Azevedo, J. de Vries, R. Korporaal, H.J. Verhoef, T.J. Visser, M.R. Aires-Barros

J. Chromatogr. A 1162 (2007), 103-113.

 

Dutch Resolution of Racemates and the Roles of Solid Solution Formation and Nucleation Inhibition

R.M. Kellogg, B. Kaptein, T.R. Vries

Topics Current Chemistry, 2007, 269, 159-197

 

The Crystallization Behavior of Proline and Its Role in Asymmetric Organocatalysis

R.M. Kellogg

Angew. Chem. Int. Ed., 2007, 46, 494-497

 

Synthesis of rhazinicine by a metal-catalyzed C-H bond functionalization strategy

Kellogg, R. M.

Chemtracts (2007), 20(6), 267-271

 

Highly chemoselective metal-free reduction of tertiary amides

Kellogg, R. M.

Chemtracts (2007), 20(6), 249-252

 

Palladium-catalyzed direct C-H arylation of N-iminopyridinium ylides: application to the synthesis of (±)-anabasine

Kellogg, R. M.

Chemtracts (2007), 20(6), 245-248

 

A predictably selective aliphatic C-H oxidation reaction for complex molecule synthesis

Kellogg, R. M.

Chemtracts (2007), 20(6), 235-239

 

Selective one-pot carbon-carbon bond formation by catalytic boronation of unactivated cycloalkenes and subsequent coupling

Kellogg, R. M.

Chemtracts (2007), 20(6), 231-234

 

Enantioselective halocyclization of polyprenoids induced by nucleophilic phosphoramidites

Kellogg, R. M.

Chemtracts (2007), 20(1), 14-19

 

2006

New developments in crystallization-Induced resolution

Bernard Kaptein, Ton R. Vries, Jose W. Nieuwenhuijzen, Richard M Kellogg, Reinier F.P. Grimbergeb and Quirinus B. Broxterman

Handbook of Chiral Chemicals second edition 2006, Chapter 7

 

Product subclass 3: rubidium and cesium carbonates

Kellogg, R. M.

Science of Synthesis (2006), Volume Date 2005, 8b, 1497-1515

 

Product subclass 2: rubidium and cesium halides

Kellogg, R. M.

Science of Synthesis (2006), Volume Date 2005, 8b, 1485-1496

 

2005

The Dutch Resolution Variant of the Classical Resolution of Racemates by Formation of Diastereomeric Salts: Family Behaviour in Nucleation

J. Dalmolen, T.D. Tiemersma-Wegman, J.W. Nieuwenhuijzen, M. van der Sluis, E. van Echten, T.R. Vries, B. Kaptein, Q.B. Broxterman, R.M. Kellogg

Chemistry – A European Journal, 2005, 5619-5624

 

Creating, varying, and growing single-site molecular contacts and formation of catalytic metal-molecule contacts

Kellogg, R. M.

Chemtracts (2005), 18(10), 591-594

 

Catalytic enantioselective a-fluorination of aldehydes and ketones

Kellogg, R. M.

Chemtracts (2005), 18(10), 549-554

 

2004

Synthesis of Enantiopure 1-Aryl-1-butylamines and 1-Aryl-3-butenylamines by Diastereoselective Addition of Allylzinc Bromide to Imines Derived from (R)-phenylglycine Amide

J. Dalmolen, M. van der Sluis, J.W. Nieuwenhuijzen, B. de Lange, B. Kaptein, R.M. Kellogg, Q.B. Broxterman

European Journal of Organic Chemistry, 2004, 1544-1557

 

Validated Assays For Human Cytochrome P450 Activities

R. L. Walsky and R. S. Obach

Drug Metab.Disp. 2004,32,647

 

Aerobic ruthenium-catalyzed oxidative cyanation of tertiary amines with sodium cyanide

Kellogg, R. M.

Chemtracts (2004), 17(11), 581-584

 

Synthesis and reactions of (2,2,2-trifluoroethyl)triphenylphosphonium trifluoromethanesulfonate

Kellogg, R. M.

Chemtracts (2004), 17(8), 401-406

 

A synthesis of sumanene, a fullerene fragment

Kellogg, R. M.

Chemtracts (2004), 17(5), 283-285

 

One-step stereocontrol of three contiguous stereogenic centers in acyclic systems: The tuning effect of an additive in a tandem asymmetric Michael addition and Meerwein-Ponndorf-Verley reduction

Kellogg, R. M.

Chemtracts (2004), 17(5), 250-254

 

Synthesis and complexation characteristics of phenanthroline and bipyridine diols

Koning, B.; de Boer, J. W.; Meetsma, A.; Kellogg, R. M.

ARKIVOC (2004), (2), 189-205

 

2003

Dutch Resolution: Separation of Enantiomers with Families of Resolving Agents. A Status Report

R.M. Kellogg, J.W. Nieuwenhuijzen, K. Pouwer, T.R. Vries, Q.R. Broxterman, R.F.P. Grimbergen, B. Kaptein, R.M. La Crois, E. de Wever, K. Zwaagstra. A/C/van der Laan

Synthesis, 2003, 10, 1626-1638

 

Synthesis of Dithienylcyclopenthene Optical Molecular Switches.

L.N. Lucas, J.J.D. de Jong, H.H. van Esch, R.M. Kellogg, B.L. Feringa

Eur. J. Org. Chem., 2003, 155

 

Structure–activity relationship study of human liver microsomes-catalyzed hydrolysis rate of ester prodrugs of MENT by comparative molecular ?eld analysis (CoMFA)

Roberta Bursi, Arijan Grootenhuis, Jaap van der Louw, Jos Verhagen, Marcel de Gooyer, Peter Jacobs, Dirk Leysen

Steroids 68 (2003) 213–220

 

Synthesis of 2,6-bridged piperazin-3-ones by N-acyliminium ion chemistry

Kellogg, R. M.

Chemtracts (2003), 16(14), 838-842

 

Enantioselective catalysis of photochemically induced cycloadditions

Kellogg, R. M.

Chemtracts (2003), 16(11), 667-672

 

(S)-1-Aminoindane: synthesis by chirality transfer using (R)-phenylglycine amide as chiral auxiliary

Uiterweerd, Patrick G. H.; van der Sluis, Marcel; Kaptein, Bernard; de Lange, Ben; Kellogg, Richard M.; Broxterman, Quirinus B.

Tetrahedron: Asymmetry (2003), 14(22), 3479-3485

 

Recent developments in the use of gallium halides in organic synthesis

Kellogg, R. M.

Chemtracts (2003), 16(2), 79-92

 

Neamin as an immunogen for the development of a generic ELISA detecting gentamicin, kanamycin, and neomycin in milk

Loomans Elma E M G; Van Wiltenburg Jim; Koets Marjo; Van Amerongen Aart

Journal of agricultural and food chemistry (2003), 51(3), 587-93

 

2002

Chirality transfer using R-phenylglycine amide: A key technology for the synthesis of enantiopure amines.

B. de Lange, W.H.J. Boesten, B. Kaptein, M. van der Sluis, J.P.G. Seerden, R.M. Kellogg, Q.B. Broxterman.

PharmaChem, 2002, 1, 29-32

 

Production of enantiopure compounds by crystallization-induced resolution

B. Kaptein, W.H.J. Boesten, B. de Lange, R.F.P. Grimbergen, L.A. Hulshof, T.R. Vries, J.P.G. Seerden, Q.B. Broxterman.

Chimica Oggi/Chemistry Today 2002, 20, 77-82

 

The Role of Nucleation Inhibition in Optical Resolution with Families of Resolving Agent.

J.W. Nieuwenhuijzen, R.F.P. Grimbergen, C. Koopman, R.M. Kellogg, T.R. Vries, K.L Power, E. van Echten, B. Kaptein, L.A. Hulshof, Q.B. Broxterman.

Angew. Chem. Int. Ed.,2002, 41 (22), 4286.

 

Synthesis of furoquinolines by a multicomponent domino process

Kellogg, R. M.

Chemtracts (2002), 15(14), 775-780

 

Enantioconvergent synthesis by sequential asymmetric Horner-Wadsworth-Emmons and palladium-catalyzed allylic substitution reactions

Kellogg, R. M.

Chemtracts (2002), 15(2), 69-73

 

2001

Asymmetric Strecker synthesis of a-amino acids via a crystallization induced asymmetric transformation using (R)-phenylglycine amide as chiral auxilary.

W.H.J. Boesten, J.P.G. Seerden, B. de Lange, H.J.A. Dielemans, H.L.M. Elsenberg, B. Kaptein, H.M. Moody, R.M. Kellogg, Q.B. Broxterman.

Org. Lett. 2001, 3, 1121-1124

 

Diastereoselective Addition of Allylzine Bromide to Imines Derived from (R)-Phenylglycine Amide.

M. van der Sluis, J. Dalmolen, B. de Lange, B. Kaptein, R.M. Kellogg, Q.B. Broxterman

Organic Lett. 2001, 3 (24),3943

 

Facile synthesis of acylsilanes via aerobic oxidation of gem-disilylalkylcopper compounds

Kellogg, R. M.

Chemtracts (2001), 14(14), 785-788

 

Palladium complex catalyzed acylation of allylic esters with acylsilanes

Kellogg, R. M.

Chemtracts (2001), 14(14), 781-784

 

A polymer-supported thionating reagent

Kellogg, R. M.

Chemtracts (2001), 14(11), 646-649

 

Ti(II)-mediated tandem inter- and intramolecular coupling reaction of unsaturated hydrocarbons: one-pot preparation of cyclopentanes and cyclohexanes from readily available acyclic starting materials

Kellogg, R. M.

Chemtracts (2001), 14(11), 631-634

 

Enantioselective synthesis of unsaturated cyclic tertiary ethers by Mo-catalyzed olefin metathesis

Kellogg, R. M.; Cefalo, D. R.; Kiely, A. F.; Wuchrer, M.; Jamison, J. Y.; Schrock, R. R.; Hoveyda, A. H.

Chemtracts (2001), 14(11), 616-619

 

2000

Dutch resolution of racemic 4-hydroxy- and 4-fluoro-phenylglycine with mixtures of phenylglycine and (+)-10-camphorsulfonic acid.

B. Kaptein, H. Elsenberg, R.F.P. Grimbergen, Q.B. Broxterman, L.A. Hulshof, K.L. Pouwer, T.R. Vries.

Tetrahedron: Asymmetry 2000, 11 (1), 1-9.

 

Highly selective palladium-catalyzed synthesis of protected a,ß-unsaturated methyl ketones and 2-alkoxy-1,3-butadienes: high-speed chemistry by microwave flash heating

Kellogg, R. M.

Chemtracts (2000), 13(11), 711-714

 

A practical method for alcohol oxidation with aqueous hydrogen peroxide under organic solvent- and halide-free conditions

Kellogg, R. M.

Chemtracts (2000), 13(4), 249-252

 

Neutral, single-component nickel(II) polyolefin catalysts that tolerate heteroatoms

Kellogg, R. M.

Chemtracts (2000), 13(4), 245-248

 

1999

Asymmetric borane reduction using mixtures of homochiral amino alcohol ligands.

B. Kaptein, H. Elsberg, A.J. Minnaard, Q.B. Broxterman, L.A. Hulshof, J.N. Koek, T.R. Vries.

Tetrahedron: Asymmetry 1999, 10 (7), 1413-1418.

 

1998

The family approach to the resolution of racemates.

T.R. Vries, H. Wynberg, E. van Echten, J.N. Koek, W. ten Hoeve, R.M. Kellogg, Q.B. Broxterman, A.J. Minnaard, B. Kaptein, S. van der Sluis, L.A. Hulshof.

Angewandte Chemie Int. Ed. 1998, 37 (17), 2349-2354.

 

“Dutch resolution”, a new technology in classical resolution

Q.B. Broxterman, E. van Echten, L.A. Hulshof, B. Kaptein, R.M. Kellogg, A.J. Minnaard, T.R. Vries, H. Wynberg

Chimica Oggi/Chemistry Today 1998, 18, 34-37

 

1997

Synthesis of haptens containing dioxaphosphorinan methoxyacetic acid linker arms for the production of antibodies to organophosphate pesticides.

W. ten Hoeve, H. Wynberg, W.T. Jones, D. Harvey, G.B. Ryan, P.H.S. Reynolds.

Bioconjugate Chem. 1997, 8 (3), 257-266.

 

1996

The synthesis of liquid-crystalline diacrylates derived from cyclohexane units.

J. Lub, J.H. van der Veen, W. ten Hoeve.

Recl. Trav. Chim. Pays-Bas 1996, 115 (6), 321.

 

The unsolicited biography of alpha-terthienyl.

H. Wynberg.

Recl. Trav. Chim. Pays-Bas 1996, 115 (2), 119.

 

1995

Monoclonal antibodies specific for the organophosphate pesticide azinphos-methyl.

W.T. Jones, D. Harvey, S.D. Jones, G.B. Ryan, H. Wynberg, W. ten Hoeve, P.H.S. Reynolds.

Food Agric. Immunol. 1995, 7 (1), 9-19.

 

Water-soluble polysquaraines and polycroconaines.

E.E. Havinga, A. Pomp, W. ten Hoeve and H. Wynberg.

Synth. Met. 1995, 69 (1-3), 581.

 

1994

Chiral cyclic amidines.

W. ten Hoeve and H. Wynberg.

Synth. Commun. 1994, 24 (15), 2215.

 

Direct amidoalkylation of ketones.

W. ten Hoeve and H. Wynberg.

Synth. Commun. 1994, 24 (6), 899.

 

Photo- and electroluminescence efficiency in soluble poly(dialkyl-p-phenylenevinylene).

E.G.J. Staring, A.C.J.E. Demandt, D. Braun, G.L.J. Rikken, Y.A.R.R. Kessener, T.H.J. Venhuizen, H. Wynberg, W. ten Hoeve, K.J. Spoelstra.

Adv. Mater. 1994, 6 (10), 934.

 

1993

Alternate donor-acceptor small-band-gap semiconducting polymers; polysquaraines and polycroconaines.

E.E. Havinga, W. ten Hoeve and H. Wynberg.

Synth. Met. 1993, 55 (1), 299.

 

Direct substitution of aromatic ethers by lithium amides. A new aromatic amination reaction.

W. ten Hoeve, C.G. Kruse, J.M. Luteyn, J.R.G. Thiecke and H. Wynberg.

J. Org. Chem. 1993, 58, 5101.

 

1992

A new class of small band gap organic polymer conductors.

E.E. Havinga, W. ten Hoeve and H. Wynberg.

Polym. Bull. (Berlin) 1992, 29 (1-2), 119.

 

The resolution, isolation, and pharmacological characterization of the enantiomers of a benzamide containing a chiral sulfoxide.

B.T. Butler, G. Silvey, D.M. Houston, D.R. Borcherding, V.L. Vaughn, A.T. McPhail, D.M. Radzik, H. Wynberg, W. ten Hoeve, E. van Echten, N.K. Ahmed and M.D. Linnik.

Chirality 1992, 4 (3), 155.

 

1991

Spectra and electrical properties of soluble partially alkyl-substituted oligomers of thiophene up to 11 rings.

E.E. Havinga, I. Rotte, E.W. Meijer, W. ten Hoeve, H. Wynberg.

Synth. Met. 1991, 41 (1-2), 473.

 

Substituted undecithiophenes: the longest characterized oligothiophenes.

W. ten Hoeve, H. Wynberg, E.E. Havinga, E.W. Meijer.

J. Am. Chem. Soc. 1991, 113 (15), 5887.

 

1990

Colorless nonlinear optical D-B-A polymers with sulfones as electron acceptors.

S. Nijhuis, G.L.J.A. Rikken, E.E. Havinga, W. ten Hoeve, H. Wynberg, E.W. Meijer.

J. Chem. Soc., Chem. Commun. 1990, (16), 1093.

 

1989

Water-soluble self-doped 3-substituted polypyrroles.

E.E. Havinga, W. ten Hoeve, E.W. Meijer, H. Wynberg.

Chem. Mater. 1989, 1 (6), 650.

 

1988

Poly-1,4-diketones obtained by the Stetter reaction: a new route to conducting heterocyclic polymers.

K.L. Pouwer, T.R. Vries, E.E. Havinga, E.W. Meijer, H. Wynberg.

J. Chem. Soc., Chem. Commun. 1988, (21), 1432.

 

1987

Self-doped water-soluble conducting polymers.

E.E. Havinga, L.W. van Horssen, W. ten Hoeve, H. Wynberg, E.W. Meijer.

Polym. Bull. (Berlin) 1987, 18 (3), 277.

 

1985

The design of resolving agents. Chiral cyclic phosphoric acids.

W. ten Hoeve and H. Wynberg.

J. Org. Chem. 1985, 50, 4508.