89524-01-6Relevant academic research and scientific papers
Synthesis of α,β-unsaturated sulfines from silylindenes and sulfur dioxide
Porskamp, P. A. T. W.,Wijdeven, A. M. van de,Zwanenburg, B.
, p. 506 - 510 (2007/10/02)
The synthesis of a variety of substituted indenethione S-oxide (all α,β-unsaturated sulfines) is described.Essentially these sulfines are prepared by the reaction of α-silyl carbanions with an excess of sulfur dioxide (modified Peterson reaction).The requisite α-silyl carbanions are generated by two different routes, i.e. by α-deprotonation of trimethylsilyl-substituted indenes and by nucleophilic δ-addition of alkyllithium compounds to dienesilanes.In all cases, the sulfines prepared were converted into cycloadducts by reaction with 2,3-dimethyl-1,3-butadiene.
