Reconstruction of Carbon Bond Frameworks via Oxapalladacycle Promoted by Synergistic Effect of Palladium Catalyst and Triethylborane
Keyword(s):
Pd-catalyzed β-carbon elimination of 3-hydroxy-4-pentenoic acid derivatives promoted by triethylborane proceeded to form conjugated dienes via a decarboxylation process. The formed conjugated dienes underwent the Prins reaction with aldehydes in situ to afford conjugated homoallylic alcohols. These sequential transformations enabled conversion of a diastereomeric mixture of 3-hydroxy-4-pentenoic acids, which were readily prepared from the simple crossed aldol reaction of esters and α,β-unsaturated aldehydes, to 3,5-hexadienyl alcohols with high regio- and stereoselectivities in a single manipulation.
Keyword(s):
2016 ◽
Vol 462
◽
pp. 191-199
◽
Keyword(s):
Keyword(s):
2010 ◽
Vol 132
(16)
◽
pp. 5922-5922
◽