Isoquinoline formation via iminium ions cyclization: A direct approach to c-2′ functionalized 3-aryltetrahydroisoquinolines
作者:Nuria Sotomayor、Esther Domínguez、Esther Lete
DOI:10.1016/0040-4020(95)00770-9
日期:1995.10
3-Aryltetrahydroisoquinoline derivatives can be efficiently prepared by titaniumtetrachloridepromoted cyclization of N-methoxymethyl-N-1,2-diarylethylamines via iminium ions. In the case of primary amines, the 1-aryl group prevents the alkylation of a second iminium ion, avoiding dimerization. The mild reaction conditions are compatible with the presence of acid sensitive groups; thus, the 2′-functionalized