Synthesis of thiophenes from allenyl sulfones involving α,β-unsaturated sulfines as intermediates
The synthesis of thiophenes starting from allenyl sulfones, via intermediate formation of α,β-unsaturated sulfines, is described.The allenyl sulfones were synthesized by a -sigmatropic rearrangement of appropriately substituted prop-2-ynyl sulfinates
Linden, Johannes B. van der,Asten, Peter F. T. M. van,Braverman, Samuel,Zwanenburg, Binne
p. 51 - 60
(2007/10/02)
A novel synthesis of thiophenes from allenic sulfones involving α,β-unsaturated sulfines as intermediates
A new method for the synthesis of α,β-unsaturated sulfines by a Peterson alkylidenation of sulfur dioxide is described. The required α-silyl carbanions are generated by heteroconjugate addition of alkyllithium to α-trimethylsitylated allenic sulfones. The
Braverman,Van Asten,Van Der Linden,Zwanenburg
p. 3867 - 3870
(2007/10/02)
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