<i>N</i>-Methyl Allylic Amines from Allylic Alcohols by Mitsunobu Substitution Using <i>N</i>-Boc Ethyl Oxamate
作者:Branca C. van Veen、Steven M. Wales、Jonathan Clayden
DOI:10.1021/acs.joc.1c00918
日期:2021.6.18
synthesis of a range of N-methyl allylicamines. Primary and secondary allylic alcohols underwent a regioselective Mitsunobu reaction with readily accessible N-Boc ethyl oxamate to deliver the corresponding N-Boc allylicamines, including in enantiopure form via stereospecific substitution. Subsequent N-methylation and Boc deprotection without chromatography yielded the amine products as hydrochloride salts
Direct, Intermolecular, Enantioselective, Iridium-Catalyzed Allylation of Carbamates to Form Carbamate-Protected, Branched Allylic Amines
作者:Daniel J. Weix、Dean Marković、Mitsuhiro Ueda、John F. Hartwig
DOI:10.1021/ol901151u
日期:2009.7.2
The direct reaction between carbamates and achiral allylic carbonates to form branched, conveniently protected primary allylicamines with high regioselectivity and enantioselectivity is reported. This process occurs without base or with 0.5 equiv K3PO4 in the presence of a metalacyclic iridium catalyst containing a labile ethylene ligand. The reactions of aryl-, heteroaryl-, and alkyl-substituted