Journal of Organic Chemistry p. 486 - 490 (1981)
Update date:2022-08-04
Topics:
Cere, Vanda
Paolucci, Claudio
Pollicino, Salvatore
Sandri, Edda
Fava, Antonino
"Cis" and "trans" doubly bridged S-heterocyclic ethylenes result by stereospecific <2,3> sigmatropic rearrangement of, respectively, cis and trans isomers of spirocyclic sulfonium ylides (eq 1 and 2).This approach has been applied to ylides derived from 7
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