A newmethod to introduce an acyl or a formyl group to β-position of aliphaticamines was studied using encarbamates, prepared from α-methoxycarbamates, as key intermidiates.
Silicon-DirectedNazarov Cyclizations. Part V. Substituent and heteroatom effects on the reaction
作者:Scott E. Denmark、Karl L. Habermas、Gary A. Hite
DOI:10.1002/hlca.19880710120
日期:1988.2.3
The ability to incorporate alkyl, alkenyl, aryl, and heteroatomic groups into substrates for the silicon-directed Nazarov cyclization and their subsequent reactions has been investigated. In general, most of the groups are compatible with the conditions for the cyclization and do not interfere even when directly attached to the divinyl ketone. The influence of substituents on the rate of the cyclization