Synthesis of Tryptamine Derivatives via a Direct, One-Pot Reductive Alkylation of Indoles
作者:Marika Righi、Francesca Topi、Silvia Bartolucci、Annalida Bedini、Giovanni Piersanti、Gilberto Spadoni
DOI:10.1021/jo3010028
日期:2012.7.20
An efficient, one-pot reductive alkylation of indoles with N-protected aminoethyl acetals in the presence of TES/TFA is reported. It represents the first general method for the direct synthesis of tryptamine derivatives from indoles and nitrogen-functionalized acetals. This convergent and versatile approach employs safe and inexpensive reagents, proceeds under mild conditions, and tolerates several
报道了在TES / TFA存在下用N-保护的氨基乙基缩醛对吲哚进行有效的一锅还原烷基化反应。它代表了从吲哚和氮官能化的缩醛直接合成色胺的首个通用方法。这种融合和通用的方法使用安全且便宜的试剂,可在温和条件下进行,并可以耐受多个官能团。该新方法可有效地用于Luzindole(一种参考MT2选择性褪黑激素受体拮抗剂)和褪黑素的克级合成。