RESOLUTION OF CHIRAL ALIPHATIC AND ARYLALKYL AMINES USING IMMOBILIZEDCANDIDA ANTARCTICALIPASE AND ISOLATION OF THEIR R- AND S-ENANTIOMERS
摘要:
The resolution of chiral aliphatic and arylalkyl amines in high enantiomeric excess (up to 97.5% ee for the R-enantiomers and up to 99.9% ee for the S-enantiomers) and good yield (50-80%) using immobilized Candida antarctica lipase and ethyl acetate as acyl donor has been demonstrated. A second resolution on the R-amine increased the enantiomeric excess to more than 99.5% (up to 99.9%).
Asymmetric Intermolecular Hydroamination of Unactivated Alkenes with Simple Amines
作者:Alexander L. Reznichenko、Hiep N. Nguyen、Kai C. Hultzsch
DOI:10.1002/anie.201004570
日期:2010.11.15
A hard nut to crack: The asymmetric intermolecular Markovnikov addition of simple amines to unactivatedalkenes can be achieved utilizing binaphtholate rare‐earth‐metal catalysts with up to 61 % ee and 73 % de in the case where R2 contains a stereogenic center.
Medicated plasters composed of a flexible support and a pressure-sensitive adhesive layer laminated thereon, in which said pressure-sensitive adhesive layer has an exposed surface with pH of 7 or higher and contains one of the following three components:
(i) a basic physiologically active agent and an acidic substance,
(ii) a salt of a basic physiologically active agent and a basic substance, and
(iii) a basic physiolosically active agent and a salt of a basic physiolosically active agent.
Braconnier, M.F.; Braekman, J.C.; Daloze, D., Bulletin des Societes Chimiques Belges, 1985, vol. 94, # 8, p. 605 - 614
作者:Braconnier, M.F.、Braekman, J.C.、Daloze, D.
DOI:——
日期:——
RESOLUTION OF CHIRAL ALIPHATIC AND ARYLALKYL AMINES USING IMMOBILIZED<i>CANDIDA ANTARCTICA</i>LIPASE AND ISOLATION OF THEIR R- AND S-ENANTIOMERS
作者:Bruce A. Davis、David A. Durden
DOI:10.1081/scc-100000584
日期:2001.1
The resolution of chiral aliphatic and arylalkyl amines in high enantiomeric excess (up to 97.5% ee for the R-enantiomers and up to 99.9% ee for the S-enantiomers) and good yield (50-80%) using immobilized Candida antarctica lipase and ethyl acetate as acyl donor has been demonstrated. A second resolution on the R-amine increased the enantiomeric excess to more than 99.5% (up to 99.9%).