Reactions of aldehdydes with organozinc reagents derived from (E)-3-bromo- and (E)-3-iodo-1-phenylsulfonylprop-1-ene
作者:Eva M. Gallagher、D. H. Grayson
DOI:10.3998/ark.5550190.p008.741
日期:——
E)-3-Bromo-1-phenylsulfonylprop-1-ene and (E)-3-iodo-1-phenylsulfonylprop-1-ene both form allylic organozincreagents that react with aromatic aldehydes to give mainly 4-aryl-4-hydroxy1-phenylsulfonylbut-1-enes. In contrast, reactions of the same organozinc species with 2-methylpropanal or 3-methylbutanal gave mixtures of diastereoisomeric 4-hydroxy-1-phenylsulfonylalk1-enes and 4-hydroxy-3-phenylsulfonylalk-1-enes