Synthesis and in vitro antitumour activity of PtCl2 complexes of pyridine- and quinoline-amine and -imine ligands and of carbocyclic ethylenediamine ligands
Diastereoselective addition of methyllithium and dimethylcuprate-boron trifluoride to imines derived from (S)-1-phenylethylamine
作者:Giuseppe Alvaro、Diego Savoia、Maria R. Valentinetti
DOI:10.1016/0040-4020(96)00746-6
日期:1996.9
trifluoride reagents with the iminesderivedfrom (S)-1-phenylethylamine afforded the secondary amines by addition to the Si face of the imines. (S,S)-bis(1-phenylethyl)amine and (S)-1-cyclohexylethanamine were prepared with high stereoselectivity, in the latter case by a two step sequence involving the final cleavage of the auxiliary. Methyllithium attacked mainly the Si face of the iminesderivedfrom 4-pyridine
Zinc complexes bearing N,N′-bidentate entiopure ligands: Synthesis, structure and catalytic activity toward ring opening polymerisation of rac-lactide
作者:Saira Nayab、Hyosun Lee、Jong Hwa Jeong
DOI:10.1016/j.poly.2012.05.044
日期:2012.8
Dichloro zinc complexes with (S)-1-phenyl-N-[(S)-1-(pyridin-2-yl)ethyl]ethanamine (PMMA) and (S)-[(6-methylpyridin-2-yl)-N-RS)-1-phenylethyl]ethanamine (MPMMA) were prepared and characterised by X-ray diffraction. The catalytic activity of the dimethyl complexes, generated in situ, was high in the ring opening polymerization of rac-lactide. Specifically, the dimethyl derivative of (PMMA)ZnCl2 yielded a highly stereocontrolled polylactide with P-r = 0.84. (C) 2012 Elsevier Ltd. All rights reserved.
Diastereoselective synthesis of chiral secondary amines with two chiral centers directly attached to the nitrogen atom
作者:M. B. Eleveld、H. Hogeveen、E. P. Schudde
DOI:10.1021/jo00369a016
日期:1986.9
Enantioselective addition of n-butyllithium to benzaldehyde in the presence of chiral lithium amides
作者:M.B. Eleveld、H. Hogeveen
DOI:10.1016/s0040-4039(01)81559-8
日期:1984.1
ELEVELD M. B.; HOGEVEEN H.; SCHUDDE E. P., J. ORG. CHEM., 51,(1986) N 19, 3635-3642