Domino reaction of 1,3-bis(trimethylsilyloxy)-1,3-dienes with oxalyl chloride: General and stereoselective synthesis of γ-alkylidenebutenolides
The Lewis acid catalyzed cyclization of oxalyl chloride with 1,3-bis-(trimethylsilyloxy)-1,3-dienes 3, derived from 1,3-dicarbonyl compounds 1, provides a new and general approach for the synthesis of γ-alkylidenebutenolides 4, a pharmacologically and syn
Chemistry of the Coccoidea. X Synthesis of the Xantholaccaic Acid B System and of Related Compounds
Xantholaccaic acid B dimethyl ester pentamethyl ether (6) and some related anthraquinones have been synthesized by regiospecific Diels-Alder addition of the highly functionalized dienes (12) and (27) successively to 2,6-dichloro-1,4-benzoquinone.This is the first synthesis of the β-arylanthraquinone skeleton characteristic of the water-soluble dyestuffs from lac insects.
Cameron, Donald W.,Feutrill, Geoffrey I.,Perlmutter, Patrick
p. 1469 - 1480
(2007/10/02)
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