Remote C-H insertion of vinyl cations leading to cyclopentenones.
Remote C-H insertion of vinyl cations leading to cyclopentenones.
复制标题
DOI:
10.1039/c7sc02768k
复制
发表时间:
2017-10-01
期刊:
影响因子:
8.4
通讯作者:
Brewer M
中科院分区:
文献类型:
--
作者:
Cleary SE;Hensinger MJ;Brewer M
Vinyl cations, generated by reacting β-hydroxy-α-diazo ketones with Lewis acids, undergo a 1,2-shift and C–H insertion to give cyclopentenone products. We report a Lewis acid catalyzed reaction sequence involving a 1,2-shift and subsequent C–H insertion that gives monocyclic and fused bicyclic cyclopentenone products. This reaction sequence, which is initiated by treating β-hydroxy-α-diazo ketones with a Lewis acid, proceeds through vinyl cation intermediates that insert at non-activated gamma C–H bonds. This reaction represents an alternative strategy to exploit the diazo functional group in an intramolecular C–H insertion, and can provide products not accessible by transition metal catalyzed C–H insertions. This remote C–H activation process provides good yields of bicyclic cyclopentenone products that contain 7- and 8-membered rings, and monocyclic prostaglandin analogs.
登录
查看更多内容
DOI:
10.1039/p19730000977
发表时间:
1973-01-01
期刊:
JOURNAL OF THE CHEMICAL SOCIETY-PERKIN TRANSACTIONS 1
影响因子:
--
作者:
KHAND, IU;KNOX, GR;FOREMAN, MI
通讯作者:
FOREMAN, MI
影响因子:
15
作者:
Draghici, Cristian;Brewer, Matthias
通讯作者:
Brewer, Matthias
影响因子:
3.6
作者:
TABER, DF;PETTY, EH
通讯作者:
PETTY, EH
影响因子:
3.6
作者:
Bayir, Ali;Draghici, Cristian;Brewer, Matthias
通讯作者:
Brewer, Matthias
影响因子:
3.6
作者:
CECCHERELLI, P;CURINI, M;WENKERT, E
通讯作者:
WENKERT, E