Silver acetate catalysed cycloadditions of isocyanoacetates
作者:Ronald Grigg、Mark I. Lansdell、Mark Thornton-Pett
DOI:10.1016/s0040-4020(98)01216-2
日期:1999.2
Silveracetate is an efficient catalyst for the cycloaddition of methyl isocyanoacetate with Michael-acceptors under mild conditions to give Δ1- or Δ2-pyrrolines in good yields. In the case of acrolein, novel chemoselectivity was observed. In the absence of a suitable olefin isocyanoacetates undergo silveracetate catalysed cyclodimerisation to give imidazoles in excellent yields. The mechanism of