112052-21-8Relevant articles and documents
Radical cyclizations. A convergent total synthesis of (±)-γ-Lycorane
Cossy, Janine,Tresnard, Ludovic,Gomez Pardo, Domingo
, p. 1125 - 1128 (2007/10/03)
(±)-γ-Lycorane has been synthesized in 10 steps from piperonylic alcohol. Two radical reactions were used successively to build the D and B rings.
Allylic alkylation with function-bearing organozinc reagents
Doucet, Henri,Brown, John M.
, p. 995 - 1000 (2007/10/03)
The first palladium-catalysed alkylations of allylic acetates with organozinc reagents bearing functionality are reported.The reaction proceeds well from ethanoate, and propanoates, derived organozinc halides and provides a useful method for transferring these moieties to an allyl fragment.The reaction proceeds through a monophosphine complex; attempts to perform asymmetric syntheses are unsuccessful so far. - Keywords: palladium; coupling; allylic substitution
Diastereoselectivity in the epoxidation of substituted cyclohexenes by dimethyldioxirane
Murray, Robert W.,Singh, Megh,Williams, Brian L.,Moncrieff, Hazel M.
, p. 1830 - 1841 (2007/10/03)
Three series of compounds based on the cyclohexene framework have been epoxidized by dimetbyldioxirane. A pronounced dependence of epoxide diastereoselectivity on substituent has been observed. In addition there is a solvent influence on this stereoselectivity. The results have been explained by invoking steric, H-bonding, and dipole - dipole influences on the epoxide stereochemistry.