3-Bromo-2-t-butylsulfonyl-1-propene.a versatile multi-coupling reagent part 1
作者:P. Auvray、P. Knochel、J.F. Normant
DOI:10.1016/s0040-4020(01)86151-2
日期:1988.1
opene was prepared in two steps from allyl-t-butylthioether in 70% overall yield. This reagent reacts selectively with a broad range of nucleophiles (amine, thiolate, lithium ester- and keto- enolates, magnesium, zinc and lithium organomatallics) to furnish the unsaturated sulfones of type in typical yields of 80–90%. The sulfone reacts also in the presence of zinc with various electrophiles (aldehydes