syn stereocontrol in the directed dihydroxylation of acyclic allylic alcohols
作者:Timothy J. Donohoe、Nicholas J. Newcombe、Michael J. Waring
DOI:10.1016/s0040-4039(99)01371-4
日期:1999.9
The preparation and directed dihydroxylation of a series of acyclic allylicalcohols is reported. The oxidation reaction is capable of demonstrating high levels of diastereoselection for the syn isomer. An explanation of the observed selectivities based on the degree of allylic strain is presented and a transition state model proposed.
Organomanganese (II) reagents XVIII: Copper-catalyzed 1,4- addition of organomanganese chloride compounds to conjugated ethylenic aldehydes
作者:Gérard Cahiez、Mouad Alami
DOI:10.1016/s0040-4039(00)70698-8
日期:1989.1
Organomanganese chlorides react with β-mono or β,β-bisubstituted α,β-ethylenic aldehydes in the presence of a catalytic amount of copper chloride to give good yields of 1,4-addition products in THF at −30°C.
Pyrrolidines and allylic amines from radical-induced cleavage of aziridines
作者:Julia M. Dickinson、John A. Murphy
DOI:10.1016/s0040-4020(01)90793-8
日期:1992.1
Cleavage of α-aziridinylalkyl radicals has been observed; the resulting aminyl radicals react with tributyltin hydride to form amines or clyclise onto appropriately sited alkenes to give pyrrolidines.