Six-membered nitrogen ring formation by radical cyclization of trichloroacetamides with enones. A synthetic entry to cis -perhydroisoquinoline-3,6-diones
Intramolecular reactions between 1-(carbamoyl)dichloromethyl radicals and enones acting as radical acceptors are reported for the first time. The Bu3SnH promoted 6-exo reaction of trichloroacetamides with enones, avoiding the 1,5-hydrogen transfer, constitutes a new synthetic entry to cis-perhydoisoquinoline-3,6-diones. (C) 2004 Elsevier Ltd. All rights reserved.
Synthesis of Normorphans through an Efficient Intramolecular Carbamoylation of Ketones
作者:Faïza Diaba、Juan A. Montiel、Georgeta Serban、Josep Bonjoch
DOI:10.1021/acs.orglett.5b01832
日期:2015.8.7
haloform-type reaction of trichloroacetamides promoted by enamines (generated in situ from ketones) as counter-reagents. The methodology was applied to the synthesis of compounds embodying the 6-azabicyclo[3.2.1]octane framework.