DENMARK, SCOTT E.;KLIX, RUSSELL C., TETRAHEDRON, 44,(1988) N 13, C. 4043-4060
作者:DENMARK, SCOTT E.、KLIX, RUSSELL C.
DOI:——
日期:——
Silicon-directed nazarov cyclizations VII
作者:Scott E. Denmark、Russell C. Klix
DOI:10.1016/s0040-4020(01)86655-2
日期:1988.1
A new modification of the silicon-directedNazarovcyclization is described which involves the cyclization of divinyl ketones incorporating an allylsilane as the control unit. The cyclizations are extremely facile with FeCl3 or BF3·OEt2 as the Lewis acid. Four permutations of five- and six-membered ring substrates have been examined. In all cases the reactions are regio- and stereoslective. In the