Resolution of limonene 1,2-epoxide diastereomers by mercury(II) ions
作者:Mariët J van der Werf、Hugo Jongejan、Maurice C.R Franssen
DOI:10.1016/s0040-4039(01)01037-1
日期:2001.8
When HgCl2 was added to a diastereomeric mixture of cis- and trans-(4S)-limonene 1,2-epoxide, the Hg(II) ions stereoselectively complexed to the cis epoxide, enabling ringopening by water. The resulting mercuric salt could be demetalated by treatment with NaBH4, giving a mixture of diastereomeric (1S,2S,4S)- and (1R,2R,4S)-diols. The remaining trans-(4S)-epoxide was obtained in >98% d.e. and 40% yield
A new diastereoselective entry to the (1S,4R)- and (1S,4S)-isomers of 4-isopropyl-1-methyl-2-cyclohexen-1-ol, aggregation pheromones of the ambrosia beetle Platypus quercivorus
作者:Michael Blair、Kellie L. Tuck
DOI:10.1016/j.tetasy.2009.08.009
日期:2009.9
A concise diastereoselective and enantiopure route to the (1S,4R)- and (1S,4S)-isomers of 4-isopropyl-1-methyl-2-cyclohexen-1-ol via a palladium-catalysed deoxygenation of the enol trilate derived from limonene glycol. Crown Copyright (C) 2009 Published by Elsevier Ltd All rights reserved