Fluoride ion promoted reactions of .alpha.-halo silanes: synthesis of stilbenes, epoxides, cyclopropanes, benzazepines, and phthalidylisoquinolines
作者:Satinder V. Kessar、Paramjit Singh、Nachhattar Pal Kaur、Usha Chawla、Kalpana Shukla、Punam Aggarwal、D. Venugopal
DOI:10.1021/jo00012a024
日期:1991.6
Reaction of alpha-halo silanes 1 with CsF in DMF affords stilbenes 5. In the presence of added aldehydes, epoxides 6 are obtained, while with electron-deficient olefins the corresponding cyclopropanes 7 are formed. A similar reaction of 1a with iminium compounds 8 in HMPA leads to 2-phenyl-3-benzazepines 12, whereas 1b or 17 furnishes phthalidylisoquinolines 15.
1-Trimethylsilyl-3-trimethylsilyloxyisobenzofuran - a potentially useful synthon for linear polycyclics
作者:J.L. Bloomer、M.E. Lankin
DOI:10.1016/s0040-4039(00)78853-8
日期:1992.5
1-Trimethylsilyl-3-trimethylsilyloxyisobenzofuran 7 may be prepared in a simple one-pot procedure from phthalide as a model for the corresponding 4-methoxy derivative 2b, a potentially useful anthracycline synthon.