No photocatalyst required – versatile, visible light mediated transformations with polyhalomethanes
作者:Johannes F. Franz、Wolfgang B. Kraus、Kirsten Zeitler
DOI:10.1039/c4cc10270c
日期:——
Visible light activation of polyhalomethanes offers a versatile, photocatalyst-free method for the α-CH functionalization of amines and for regioselective Kharasch-type additions.
1-Ethoxy-2-methyl-1,2,3,4-tetrahydroisoquinoline (3a) has been prepared by the reaction of 2-methyl-3,4-dihydroisoquinolinium bromide (7a) with sodium ethoxide. A convenient method for the preparation of 2-methyl-1-(2-oxoalkyl)-1,2,3,4-tetrahydroisoquinolines 2 has been developed by utilizing the nucleophilic reaction of active methylene compounds with 3a.
CATIONIC DIHYDROISOQUINOLINIUM DERIVATIVES FOR USE AS BLEACH ACTIVATORS
申请人:Gross Wibke
公开号:US20110146005A1
公开(公告)日:2011-06-23
Agent for dyeing while simultaneously bleaching keratin fibers. The agent contains, in a cosmetic carrier, at least one oxidation dye precursor and at least one cationic 3,4-dihydorisoquinolinium derivative.