Convenient Preparation of Indolyl Malonates via Carbenoid Insertion
作者:Romelo Gibe、Michael A. Kerr
DOI:10.1021/jo025851z
日期:2002.8.1
under catalysis by rhodium(II)acetate, undergo C-H and N-H insertion reactions regioselectively depending on the substitution pattern on the indole moiety. In indoles where the 3-position is unsubstituted, high yields of the C3-H insertion product were observed. In 3-alkylindoles, 2-substitution predominated, while N-methyltetrahydrocarbazole yielded the product resulting from insertion into the C6-H bond
Direct Functionalization of Indoles: Copper-Catalyzed Malonyl Carbenoid Insertions
作者:Michael B. Johansen、Michael A. Kerr
DOI:10.1021/ol1020948
日期:2010.11.5
Indoles, when treated with dimethyl diazomalonate under catalysis by Cu(acac)(2), undergo C-H insertion reactions regioselectively depending on the substitution pattern on the indole moiety. Indoles where the 3-position is substituted give high yields of the C2-H insertion product. Microwave conditions are also disclosed which show comparable yields with reduced reaction times.