142387-82-4Relevant academic research and scientific papers
One-step preparation of 1-substituted tetrahydroisoquinolines via the Pictet-Spengler reaction using zeolite catalysts
Hegedüs, Adrienn,Hell, Zoltán
, p. 8553 - 8555 (2007/10/03)
A new, one-step variation of the Pictet-Spengler reaction has been elaborated using a small pore size zeolite as the catalyst. A new, environmentally friendly variation of the Pictet-Spengler reaction has been elaborated using a small pore size zeolite. The easily separable and recyclable catalyst provided high conversions and a shorter reaction time than the classical acetic acid or trifluoroacetic acid.
Rate constants for aryl radical cyclization of aldimines: Synthesis of tetrahydroisoquinolines by fast 6-endo closures to carbon
Tomaszewski,Warkentin
, p. 2123 - 2126 (2007/10/02)
Aryl radicals cyclize to an imino functional group in a competition involving 6-endo closure to C and 5-exo closure to N. there is a large 6-endo preference forming tetrahydroisoquinolinyl radicals with k(6-endo) (80°C) > 108 s-1.
