Pyrrolidines by intramolecular addition of Kolbe radicals generated from β-allylaminoalkanoates
作者:L. Becking、H.J. Schäfer
DOI:10.1016/0040-4039(88)85212-2
日期:1988.1
3-Alkyl-substituted pyrrolidines 7 are obtained by Kolbe electrolysis of β-allylarainoalkanoates 5, intramolecularaddition of the radical and mixed coupling with the radical of a coacid.
Aerobic Synthesis of Pyrroles and Dihydropyrroles from Imines: Palladium(II)-Catalyzed Intramolecular CH Dehydrogenative Cyclization
作者:Zhuangzhi Shi、Mamta Suri、Frank Glorius
DOI:10.1002/anie.201300477
日期:2013.4.26
sp3ectacularly mild! An efficient PdII‐catalyzed intramoleculardehydrogenativecyclization of imines affords (dihydro)pyrrole products using molecular oxygen as the sole oxidant. This mild formal sp3‐CH functionalization allows rapid and atom‐economical assembly of (dihydro)pyrrole rings from inexpensive and readily available allylamines and ketones. A broad range of functional groups are tolerated
Direct Amination of Olefins through Sequential Triazolinedione Ene Reaction and Carbanion-Assisted Cleavage of the N−N Urazole Bond
作者:Waldemar Adam、Aurelia Pastor、Thomas Wirth
DOI:10.1021/ol000044c
日期:2000.5.1
yields by the base-catalyzed hydrolysis of trialkylated allylic urazoles 3; the latter are prepared by the TAD ene reaction of the appropriate olefin and further N-alkylation with alpha-bromoacetophenone. The proposed mechanism for this novel urazole rupture is based on the generation of a carbanion adjacent to the hydrazide functionality, which induces urazole ring-opening by cleavage of the N-N bond