178326-72-2Relevant academic research and scientific papers
Enantioselective Pictet-Spengler Reaction of Nitrones Derived from Nb-Hydroxytryptamine with Aldehydes Catalyzed by Chiral Br?nsted Acid-Assisted Lewis Acids
Kawate, Tomohiko,Yamada, Hideki,Matsumizu, Miyako,Nishida, Atsushi,Nakagawa, Masako
, p. 761 - 762 (1997)
The enantioselective Pictet-Spengler reaction catalyzed by chiral binaphthol-derived Br?nsted acid-assisted Lewis acids is demonstrated. The Pictet-Spengler reaction of nitrones, prepared from Nb-hydroxytryptamine with aldehydes, gave the corresponding 1-substituted-2-hydroxytetrahydro-β-carbolines with up to 91% ee.
Chiral Lewis Acid-Mediated Enantioselective Pictet-Spengler Reaction of Nb-Hydroxytryptamine with Aldehydes
Yamada, Hideki,Kawate, Tomohiko,Matsumizu, Miyako,Nishida, Atsushi,Yamaguchi, Kentaro,Nakagawa, Masako
, p. 6348 - 6354 (2007/10/03)
The first example of a reagent-controlled enantioselective Pictet-Spengler reaction is demonstrated. Using diisopinocampheylchloroborane as a chiral Lewis acid catalyst, the Pictet-Spengler reaction of Nb-hydroxytryptamine with aldehydes gave the corresponding 2-hydroxytetrahydro-β-carbolines in up to 90% ee. The enantioselective Pictet-Spengler reaction catalyzed by chiral binaphthol-derived Br?nsted acid-assisted Lewis acids, with up to 91% ee, is also demonstrated.
Enantioselective asymmetric Pictet-Spengler reaction catalyzed by diisopinocampheylchloroborane
Kawate, Tomohiko,Yamada, Hideki,Soe, Than,Nakagawa, Masako
, p. 1249 - 1252 (2007/10/03)
The first example of a reagent-controlled enantioselective Pictet-Spengler reaction is demonstrated. Employing diisopinocampheylchloroborane as a chiral Lewis acid catalyst, the Pictet-Spengler reaction of N(b)-hydroxytryptamine gave the corresponding 2-h
