Structural requirements for the thallium(<scp>III</scp>)-mediated cyclisation of unsaturated alcohols. A novel fragmentation reaction producing 19-norsteroids
作者:Pavel KočOvský、Vratislav Langer、Adolf Gogoll
DOI:10.1039/c39900001026
日期:——
The unsaturatedalcohol (1) is readily cyclised to the hydroxytetrahydrofuran (3) by means of thallium(III), whereas its congener (4) has been found to give (7) as the product of a novel, stereoelectronically controlled, fragmentation; the scope of the tandem electrophilic cyclisation/solvolysis is discussed; the structure of (7) has been determined by X-ray crystallography.
Stereo- and regiocontrol of electrophilic additions to cyclohexene systems by neighboring groups. Competition of electronic and stereoelectronic effects and comparison of the reactivity of selected electrophiles
作者:Pavel Kocovsky、Milan Pour
DOI:10.1021/jo00308a014
日期:1990.10
Kocovsky, Pavel; Turecek, Frantisek; Cerny, Vaclav, Collection of Czechoslovak Chemical Communications, 1982, vol. 47, # 1, p. 124 - 129