Two-Step Electrochemical Annulation for the Assembly of Polycyclic Systems
摘要:
[GRAPHIC]A two-step electrochemical annulation has been developed for the preparation of fused furans. The process involves an initial conjugate addition of a furyethyl cuprate and trapping of the enolate as the corresponding silyl enolether. The second step of the annulation involves the anodic coupling of the furan and the silyl enol ether to form a six-membered ring.
Furans in synthesis. 5. Furan-terminated cationic cyclizations in the preparation of fused, spirocyclic and bridged ring systems. An application to the synthesis of nakafuran 9
作者:Steven P. Tanis、Paul M. Herrinton
DOI:10.1021/jo00221a008
日期:1985.10
Two-Step Electrochemical Annulation for the Assembly of Polycyclic Systems
作者:Christopher R. Whitehead、E. Hampton Sessions、Ion Ghiviriga、Dennis L. Wright
DOI:10.1021/ol026771k
日期:2002.10.1
[GRAPHIC]A two-step electrochemical annulation has been developed for the preparation of fused furans. The process involves an initial conjugate addition of a furyethyl cuprate and trapping of the enolate as the corresponding silyl enolether. The second step of the annulation involves the anodic coupling of the furan and the silyl enol ether to form a six-membered ring.
Furans in Synthesis. The Preparation of Spiro-Cyclic Systems.
作者:Steven P. Tanis、Paul M. Herrinton、Lisa A. Dixon
DOI:10.1016/s0040-4039(00)98204-2
日期:1985.1
Furan-terminated cationic cyclizations allylic alcohols, enones, and N-acyl iminium ions as initiators have been explored as routes to highly functionalized spiro[4,5]decanes, spiro[5,5]undecanes, spiro[4,6]undecanes, and spiro[5,6]dodecanes.