Palladium-catalyzed heteroarylation of 1-(tert-butyldimethylsilyl)-3-indolylzinc chloride. Efficient synthesis of 3-(2-pyridyl)indoles
作者:Mercedes Amat、Sabine Hadida、Joan Bosch
DOI:10.1016/s0040-4039(00)75819-9
日期:1994.1
Palladium-catalyzed coupling of 1-(tert-butyldimethylsilyl)-3-indolylzinc chloride (2) with either π-deficient or π-excedent heteroaryl halides gives 3-arylindoles in good to excellent yields. The method is extensively applied to the preparation of 3-(2-pyridyl)indoles.
The formal synthesis of uleine-type (dasycarpidone, dasycarpidol, uleine, and 17-hydroxy-16, 17-dihydrouleine) and Strychnos alkaloids belonging to both the Strychnan (tubifoline, tubifolidine, and 19,20-dihydroakuammicine) and Aspidospermatan (tubotaiwine) skeletal types from 3-(2-pyridyl)indoles is described.