10133-76-3Relevant academic research and scientific papers
Total synthesis of racemic 1-aryl-tetrahydroisoquinoline alkaloids
ábrányi-Balogh, Péter,F?ldesi, Tamás,Milen, Mátyás
, p. 1907 - 1912 (2015/10/29)
A new synthetic route was developed for the preparation of natural products cryptostyline I, II, III and 1-phenyl-6,7-dimethoxy-2-methyl-1,2,3,4-tetrahydroisoquinoline. The Liebeskind-Srogl palladium-catalyzed carbon-carbon cross-coupling protocol was use
Dehalogenation of 1-Halogenothienyl-di- and -tetra-hydroisoquinolines by Sodium Methoxide in Dimethyl Sulphoxide
Barker, John M.,Huddleston, Patrick R.,Clephane, Janette,Wood, Michael L.,Holmes, David
, p. 275 - 282 (2007/10/02)
On treatment with sodium methoxide-dimethyl sulphoxide (NaOMe-DMSO) 1-(5-halogeno-2-thienyl)-6,7-dimethoxy-2-methyl-1,2,3,4-tetrahydroisoquinolines suffer loss of halogen and are converted into the related 1-hydroxytetrahydroisoquinolines.The reaction fails with comparable 1-bromophenyl- and 1-(halogeno-3-thienyl)tetrahydroisoquinolines.A similar transformation takes place with (5-halogeno-2-thienyl)phenylmethoxymethanes, leading to the dimethyl acetal of the 5-dehalogenated-2-thienyl phenyl ketone. α-Halogenated-2 and 3-thienyl-3,4-dihydroisoquinolines undergo dehalogenation-aromatisation with NaOMe-DMSO.Mechanisms for these conversions are proposed.
