AUTHOR=Pan Xuling , Liu Qian , Nong Yingling TITLE=2-Alkylation of 3-Alkyindoles With Unactivated Alkenes JOURNAL=Frontiers in Chemistry VOLUME=10 YEAR=2022 URL=https://www.frontiersin.org/journals/chemistry/articles/10.3389/fchem.2022.860764 DOI=10.3389/fchem.2022.860764 ISSN=2296-2646 ABSTRACT=

An acid-catalyzed 2-alkylation of indole molecules is developed. Only catalytic amount of the commercially available, inexpensive and traceless HI is used as the sole reaction promoter. 2,3-Disubstituted indole molecules bearing congested tertiary carbon centers are afforded as the final products in moderate to excellent yields.