Investigation of the reaction of<i>N</i>-substituted indolylborates: Palladium catalyzed cross-coupling reactions and intramolecular alkyl migration reactions
作者:Minoru Ishikura、Isao Agata、Nobuya Katagiri
DOI:10.1002/jhet.5570360408
日期:1999.7
The palladium catalyzed cross-coupling reaction of indolylborates with various N-protecting groups was investigated, where N-Methyl, N-methoxy, and N-tert-butoxycarbonyl groups were found to be useful. However, triethyl(1-methoxymethylindol-2-yl)borate could not be used for this reaction. It was also found that the alkyl migration reaction of trialkyl(1-methoxymethylindol-2-yl)borate produced 2-alkyl-1-methyl-indole
研究了具有各种N-保护基的吲哚硼酸酯的钯催化的交叉偶联反应,其中发现N-甲基,N-甲氧基和N-叔丁氧基羰基是有用的。但是,(1-甲氧基甲基吲哚-2-基)硼酸三乙酯不能用于该反应。还发现三(1-甲氧基甲基吲哚-2-基)硼酸烷基酯的烷基迁移反应产生2-烷基-1-甲基吲哚,伴随着1-甲氧基甲基意外地还原为1-甲基。