Synthesis of enantiomerically enriched anti-homoallyl alcohols mediated by Crude Chicken Liver Esterase (CCLE)
摘要:
Enantiomerically enriched anti-homoallyl alcohols were synthesized in 67->99% enantiomeric purities via enantioselective hydrolysis of the corresponding racemic acetates mediated by Crude Chicken Liver Esterase (CCLE).
Reversible stereocontrol in the Lewis acid promoted reaction of alkoxyaldehydes toward various allyltins
作者:Yutaka Nishigaichi、Akio Takuwa
DOI:10.1016/s0040-4039(02)02867-8
日期:2003.2
In the reactions of variously substituted allyltin reagents toward achiral alkoxyaldehydes, one of the diastereomeric homoallyl alcohols was stereoselectively obtained by the help of BF3, while TiCl4 preferentially gave the other diastereomer, though (E)- and (Z)-3-monoalkylallyltin reagents were exceptional. This reversible diastereoselectivity can be explained by the coordination geometry (anti or
Allylic-type diindium reagents were prepared from 3-bromo-1-iodopropene (1a), 3-bromo-1-iodo-1-phenylpropene (1b), or 2,4-diiodobut-2-en-1-ol (1c) with metallic indium, and their successive coupling with electrophiles was examined. The coupling behavior of the diindium reagents was found to depend on the electrophiles and the substituent on the diindium compounds.
Gerard,F.; Miginiac,P., Bulletin de la Societe Chimique de France, 1974, p. 1924 - 1930
作者:Gerard,F.、Miginiac,P.
DOI:——
日期:——
Synthesis of enantiomerically enriched anti-homoallyl alcohols mediated by Crude Chicken Liver Esterase (CCLE)
作者:Deevi Basavaiah、Polisetti Dharma Rao
DOI:10.1016/0957-4166(95)00075-z
日期:1995.3
Enantiomerically enriched anti-homoallyl alcohols were synthesized in 67->99% enantiomeric purities via enantioselective hydrolysis of the corresponding racemic acetates mediated by Crude Chicken Liver Esterase (CCLE).