Efficient synthesis of quinoxalines with hypervalent iodine as a catalyst
摘要:
Various biologically important quinoxalines were efficiently synthesized in excellent yields via one-pot reaction between 1,2-diaminobenzenes and internal alkynes. The method utilizes inexpensive and readily available hypervalent iodine source, such as (diacetoxyiodo)benzene (PhI(OAc)(2)) and proved to be a better alternative as compared to expensive transition metal catalysts. Quinoxaline 4i [(2-phenyl-3-(3,4,5-trimethoxy phenyl)quinoxaline)] was evaluated for leukemia cancer cell lines and turned out to be a good candidate. (C) 2013 Elsevier Ltd. All rights reserved.
Various biologically important quinoxalines were efficiently synthesized in excellent yields via one-pot reaction between 1,2-diaminobenzenes and internal alkynes. The method utilizes inexpensive and readily available hypervalent iodine source, such as (diacetoxyiodo)benzene (PhI(OAc)(2)) and proved to be a better alternative as compared to expensive transition metal catalysts. Quinoxaline 4i [(2-phenyl-3-(3,4,5-trimethoxy phenyl)quinoxaline)] was evaluated for leukemia cancer cell lines and turned out to be a good candidate. (C) 2013 Elsevier Ltd. All rights reserved.