[Omim][NO3], a green and base-free medium for one-pot synthesis of benzothiazinones at room temperature

…, MS Abaee, M Rouzgard, M Mirzaei

Index: Sharifi, Ali; Abaee, M. Saeed; Rouzgard, Mahdiyeh; Mirzaei, Mojtaba Synthetic Communications, 2013 , vol. 43, # 15 p. 2079 - 2089

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Citation Number: 4

Abstract

A general and efficient room-temperature procedure is developed for high-yield synthesis of 2H-benzo[b][1,4]thiazin-3(4H)-one derivatives in one pot from the reaction of 2-aminothiophenols with 2-bromoalkanoates in ionic liquid [bmim]NO 3 without the use of any catalyst, base, or additive. Products were obtained in good yields by simple extraction with Et 2 O followed by evaporation of the volatile contents and recrystallization from Et 2 O. The ionic liquid was recycled and ...