Erwan le Grognec's Publications List

An Efficient and Large-Scale Synthesis of N-(benzyloxycarbonyl)- and N-(methyloxycarbonyl)-(S)-Vinyl-glycinol.

2010-05-26T22:36:26Z

A. Lumbroso, V. Coeffard, E. Le Grognec, I. Beaudet, J.-P. Quintard (2010) Tetrahedron Lett. 51: 3226-3228

Addition of g-Silyloxyallyltins on Ethyl Glyoxylates: Evaluation of the Influence of the Experimental Conditions on the Stereochemical Course of the Reaction.

2010-05-26T22:21:30Z

A. Lumbroso, P. Kwiatkowski, A. Blonska, E. Le Grognec, I. Beaudet, J. Jurczak, S. Jarosz, J.-P. Quintard (2010) Tetrahedron 66: 1570-1580

Synthesis of Highly Enantioenriched Chiral alpha-Aminoorganotins via Diastereoselective Ring Opening of Chiral N-(Arenesulfonyl) 2-Tributylstannyloxazolidines.

2010-05-26T22:20:34Z

trans-N-(Arenesulfonyl)-2-tributylstannyloxazolidines derived from (R)-phenylglycinol were diastereoselectively ring-opened by soft organometallic reagents in the presence of BF(3).OEt(2). Both higher order organocuprates and allyltributyltin afforded the desired products in good-to-excellent yields and high diastereoselectivities (dr up to 99/1). The stereochemical assignments of tributylstannyl-...

V. Coeffard, E. Le Grognec, I. Beaudet, M. Evain, J.-P. Quintard (2009) J. Org. Chem. 74: 5822-5838

Preparation of allyltin reagents grafted on solid support: clean and easily recyclable reagents for allylation of aldehydes.

2010-05-26T22:23:55Z

The preparation of polymer-supported allyltin reagents was shown to be possible for both unfunctionalized and functionalized allyl units. These reagents were treated with aldehydes in the presence of cerium(III) or indium(III) salts to afford high yields of homoallylic alcohols, practically uncontaminated with organotin residues (less than 5 ppm). Some mechanism aspects are briefly discussed and t...

J.-M. Chrétien, F. Zammattio, D. Gauthier, E. Le Grognec, M. Paris, J.-P. Quintard (2006) Chem. Eur. J. 12: 6816-6828

Polymer-supported organotin reagents for regioselective halogenation of aromatic amines.

2010-05-26T22:23:10Z

[reaction: see text] Polymer-supported triorganotin halides were used in the halogenation reaction of aromatic amines. Treatment of aromatic amines with n-butyllithium and polymer-supported organotin halides gave the corresponding polymer-bound N-triorganostannylamines, which by treatment with bromine or iodine monochloride gave the para-halogenated aromatic amines with high yields and high select...

J.-M. Chrétien, F. Zammattio, E. Le Grognec, M. Paris, B. Cahingt, G. Montavon, J.-P. Quintard (2005) J. Org. Chem. 70: 2870-2873

Preparation of gamma-siloxyallyltributylstannanes and their use in the synthesis of (+/-)-1-deoxy-6,8a-di-epi-castanospermine.

2010-05-26T22:22:15Z

gamma-siloxyallyltributylstannanes were selectively obtained as E or Z isomers from beta-tributylstannylacrolein upon reaction with lithium or magnesium alkylcyanocuprates. The ability of the reagents to give a high syn selectivity when added to iminium salts has been used for the efficient synthesis of (+/-)-1-deoxy-6,8a-di-epi-castanospermine from succinimide. The key step of the synthesis was t...

F. Chevallier, E. Le Grognec, I. Beaudet, F. Fliegel, M. Evain, J.-P. Quintard (2004) Org. Biomol. Chem. 2: 3128-3133

Radical polymerization of styrene controlled by half-sandwich Mo(III)/Mo(IV) couples: all basic mechanisms are possible.

2010-05-26T21:58:04Z

Density functional calculations of bond dissociation energies (BDEs) have been used as a guide to the choice of metal system suitable for controlling styrene polymerization by either the stable free radical polymerization (SFRP) or the atom transfer radical polymerization (ATRP) mechanism. In accord with the theoretical prediction, CpMo(eta(4)-C(4)H(6))(CH(2)SiMe(3))(2), 2, is not capable of yield...

E Le Grognec, J Claverie, R Poli (2001) J. Am. Chem. Soc. 123: 9513-9524

Diene-Containing half-sandwich MoIII complexes as ethylene polymerization catalysts: experimental and theoretical studies.

2010-05-26T22:00:24Z

Seventeen-electron compounds of MoIII having the general formula [(eta5-C5R5)Mo(eta4-diene)X2] (R = H, Me: dieney = butadiene, isoprene, or 2,3-dimethylbutadiene: X= Cl, CH3) are a new class of ethylene polymerization catalysts. The polyethylene obtained shows a bimodal distribution, the major weight fraction being characterized by very long (M around 10(6)) and highly linear polymer chains. The n...

E Le Grognec, R Poli (2001) Chem. Eur. J. 7: 4572-4583