
Tetrahedron Letters p. 3301 - 3304 (1990)
Update date:2022-09-26
Topics:
Bestmann
Kisielowski
Ethinylphosphonium salts 4 react with methylenetriphenylphosphorane 5 to give 1,3-bis-(triphenylphosphonio)propenid-cation salts 6, whereas from 4 with benzylidenetriphenylphosphorane 10α and isopropylidenetriphenylphosphorane 10β the 1.3-diphosphaallyl-c
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