Dienediolates from Unsaturated Carboxylic Acids: Michael Addition of Dilithium Buta-1,3-diene-1,1-diolate (from Crotonic Acid) to Unsaturated Ketones
Conjugate addition of the lithium dienediolate derived from crotonic acid to several α,β-unsaturated ketones gave 7-oxocarboxylic acids.Styryl ketones (2a-g) afforded mixtures of 1,4-α- and 1,4-γ-adducts, in proportions depending on the bulk of the substi
Ballester, Pablo,Costa, Antonio,Raso, Angel Garcia,Gomez-Solivellas, Antonio,Mestres, Ramon
p. 1711 - 1718
(2007/10/02)
UNSATURATED CARBOXYLIC ACID DIENOLATES. MICHAEL ADDITION TO ENONES THROUGH TANDEM 1,2-ADDITION - OXY-COPE REARRANGEMENT.
Michael addition of the dienolate derived from 2-butenoic acid to 1,3-diphenylpropenone occurs through a 1,2-addition followed by a -sigmatropic rearrangement, α,γ-regioselectivity found for Michael addition to other styryl ketones depends on the ste
Ballester, P.,Garcia-Raso, A.,Gomez-Solivellas, A.,Mestres, R.
p. 2485 - 2488
(2007/10/02)
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