Hexafluoroisopropanol has been demonstrated as the versatile promoter for redox-neutral α-C(sp3)-H functionalization of cyclic amines via the cascade [1,5]-hydride transfer/cyclization strategy. A wide range of cyclic amines are functionalized into bioactive tetrahydroquinolines, quinazolines, benzoxazines, and benzotriazepines in moderate to excellent yields. This protocol features additive-free conditions
Reported herein is the hydride transfer initiated redox-neutral cascadecyclizations of aurones, providing a variety of [6,5] spiro-heterocycles in satisfactory yields and good diastereoselectivities.
The redox-neutral cascade dearomatization of indoles with o-aminobenzaldehydes has been realized via the hydride transfer strategy, achieving the condition- and substrate-controlled divergent synthesis of tetrahydroquinoline-fused spiroindolenines. The integration of hydride transfer-involved C(sp(3))-H functionalization with dearomatization provides a promising platform for the construction of structurally diverse molecules.
Effect of different dialkylamino groups on the regioselectivity of lithiation of O-protected 3-(dialkylamino)phenols
作者:Maria Skowronska-Ptasinska、Willem Verboom、David N. Reinhoudt
DOI:10.1021/jo00215a020
日期:1985.7
SKOWRONSKA-PTASINSKA, M.;VERBOOM, W.;REINHOUDT, D. N., J. ORG. CHEM., 1985, 50, N 15, 2690-2698
作者:SKOWRONSKA-PTASINSKA, M.、VERBOOM, W.、REINHOUDT, D. N.