6-Exo and 7-endo photocyclization of αβ-unsaturated organosilicon ω-thiols
摘要:
The regioselectivity of cyclization of 3,3- and 4,4-dimethylsila-1-hexene-6-thiols upon UV-irradiation is reported. Ring closure involving the vinyl group at silicon results in the preferred formation of the exo-cyclic product, whereas a high and reversed regio- selectivity is observed when the cyclization reaction occurs via the allyl group at silicon.
6-Exo and 7-endo photocyclization of αβ-unsaturated organosilicon ω-thiols
作者:Svetlana V. Kirpichenko、Lyudmila L. Tolstikova、Elena N. Suslova、Mikhail G. Voronkov
DOI:10.1016/s0040-4039(00)79255-0
日期:1993.6
The regioselectivity of cyclization of 3,3- and 4,4-dimethylsila-1-hexene-6-thiols upon UV-irradiation is reported. Ring closure involving the vinyl group at silicon results in the preferred formation of the exo-cyclic product, whereas a high and reversed regio- selectivity is observed when the cyclization reaction occurs via the allyl group at silicon.
Tolstikova; Shainyan, Russian Journal of General Chemistry, 1997, vol. 67, # 11, p. 1728 - 1732