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Highly regioselective, electrophile induced cyclizations of 2-(prop-1-ynyl)benzamides
, Shankar Chinta Bhavani, Sanapa Harikrishna, Prasad Vasikarla Kamala
Published in Royal Society of Chemistry (RSC)
2018
Volume: 16
   
Issue: 21
Pages: 3947 - 3951
Abstract

We report an electrophile promoted, highly regioselective (∼100%) synthesis of 5-membered haloimidiates from 2-(1-alkynyl)benzamides under metal free conditions. The steric bulk in association with neighbouring group assistance at the propargylic carbon of an alkyne has been employed as the dictating factor to achieve the regioselectivity. A very broad structural diversity has been observed for propargylic alcohols and acetates, and for amide functional groups. Control experiments supported the role of the steric bulk as well as neighbouring group assistance from the oxygen atom of the substituent for the observed high regioselectivity.

About the journal
JournalData powered by TypesetOrganic & Biomolecular Chemistry
PublisherData powered by TypesetRoyal Society of Chemistry (RSC)
Open AccessNo