On the properties of some substituted α'-lithiated α(z), -butadienyl sulfides: cyclisations and rearrangements
作者:Marius Reglier、Sylvestre A. Julia
DOI:10.1016/s0040-4039(00)95086-x
日期:1985.1
The conditions for the preparation and cyclisation of the title compounds are described. The stability of the intermediate lithio-thiacyclohexenes is shown to depend on the reaction conditions and the substituents R1-R4. The final products , and arise from via a [1.4] sigmatropic rearrangement, a [1.3]prototropic shift followed by a [2.3] sigmatropic rearrangement, or the elimination of lithium methanethiolate