Transition-Metal-Free Redox-Neutral One-Pot C3-Alkenylation of Indoles Using Aldehydes
作者:Samrat Sahu、Ankush Banerjee、Modhu Sudan Maji
DOI:10.1021/acs.orglett.6b03612
日期:2017.2.3
indoles in a domino fashion. A transition-metal-free C3-alkenylation of indole is reported by using sequential Brønstedacid/base catalysis. Several β-substituted 3-alkenylindoles and conjugated 1,3-dienes are synthesized by direct coupling of indole and readily available aliphatic aldehydes. Excellent scalability and recycling of benzenesulfinic acid for successive alkenylation reactions up to five times