Insertion of Fischer carbene complexes into the carboncarbon bond. Ring expansion of a sulfur heterocycle from five- to six-membered
作者： Alejandro M. Granados , Jerónimo Kreiker , Rita H. de Rossi
DOI: 10.1016/S0040-4039(02)01971-8
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摘要: The reaction of 4-X-5-alkylthio-3H-1,2-dithiole-3-thione (1) with Fischer carbene complexes (2) gives, as a main product, cyclohexa dithiine derivatives due to insertion the ligand into C3C4 bond heterocycle. takes place 1 where alkyl substituents in position 5 are ethyl, butyl, benzyl and dodecyl 4 H, O-Me, Ph Cl. Complexes Cr W metallic center were used, more reactive than derivatives.
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