Microwave-assisted synthesis of the (E)-α-methylalkenoate framework from multifunctionalized allylic phosphonium salts
作者:Lidiane Meier、Misael Ferreira、Marcus M. Sá
DOI:10.1002/hc.21001
日期:——
A convenient and general microwave-assisted method for the synthesis of stereochemicallydefined α-methylalkenoic acids and esters from allylic phosphonium salts in a basic aqueous medium is described. A selective preparation of acids or esters was dependent on the base (NaOH or NaHCO3) employed in the reaction and could be achieved with good to excellent yields under mild conditions in the absence
Selective Preparation of Functionalized Dienes from Allylic Phosphonium Salts through the Wittig Reaction
作者:Marcus M. Sá、Lidiane Meier
DOI:10.1002/hc.21104
日期:2013.9
A convenient and general method for the synthesis of stereochemicallydefined dienes from allylic phosphonium salts under simple conditions is described. Selective preparation of trisubstituted dienes was performed with good-to-excellent yields in mild basic aqueous medium. Preparation of 3-deuterated products was also readily achieved when H2O was replaced with D2O as the solvent.