Chemistry of heavy carbene analogs R2M (M = Si, Ge, Sn). 8. Germylenes: singlets or triplets? [2 + 4]Cheletropic cycloadditions of dimethylgermylene and diiodogermylene to conjugated dienes
作者:Michael Schriewer、Wilhelm P. Neumann
DOI:10.1021/ja00342a043
日期:1983.2
Egorov, M. P.; Gal'minas, A. M.; Basova, A. A., Doklady Chemistry, 1993, vol. 329, p. 102 - 103
作者:Egorov, M. P.、Gal'minas, A. M.、Basova, A. A.、Nefedov, O. M.
DOI:——
日期:——
CIDNP 1H study of the photolysis of 7-sila- and 7-germa-norbornadienes
the CIDNP 1H technique. The reactions proceeds by a two-step mechanism via the reversibleformation of singlet biradicals, II. The triplet biradical (II), formed as a result of S-T conversion of (II)(S), irreversibly decomposes giving Me2E (E = Si, Ge). The insertion of Me2E into the CBr bond of PhCH2Br and the SnCl bond of Me3SnCl occurs via a radical mechanism, as deduced from the CIDNP effects observed