A Synthetic Method for Palladium-Catalyzed Stannylation at the 5- and 6-Benzo Positions of Indoles
摘要:
The stannylation of indole derivatives proceeds in good yields under palladium catalysis (5 mol %) without protection of the indolic nitrogen. The general utility of both PdCl2(PhCN)(2)/PCy3 and Pd(2)dba(3)/PCy3 as catalytic systems for the stannylation of three indole derivatives, with varying degrees of electron density, is presented.
A Synthetic Method for Palladium-Catalyzed Stannylation at the 5- and 6-Benzo Positions of Indoles
作者:Emily B. Corcoran、Anna B. Williams、Robert N. Hanson
DOI:10.1021/ol302076d
日期:2012.9.7
The stannylation of indole derivatives proceeds in good yields under palladium catalysis (5 mol %) without protection of the indolic nitrogen. The general utility of both PdCl2(PhCN)(2)/PCy3 and Pd(2)dba(3)/PCy3 as catalytic systems for the stannylation of three indole derivatives, with varying degrees of electron density, is presented.
Efficient synthesis of 5- and 6-tributylstannylindoles and their reactivity with acid chlorides in the Stille coupling reaction
Several 5- and 6-acylindoles have been synthesized in good yield by means of palladium catalyzed cross-coupling reactions between acidchloride derivatives and 5- or 6-tributylstannylindoles to give useful intermediates for the synthesis of analogues of biologically and pharmacologically active molecules.