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One-Pot Synthesis of Trifluoromethyl-Substituted Imidazobenz[1,2- d ]- and -[1,2- c ]isoxazoles
Russian Journal of General Chemistry ( IF 0.9 ) Pub Date : 2020-06-20 , DOI: 10.1134/s1070363220040295
T. S. Khlebnikova , Yu. A. Piven’ , V. G. Isakova , V. A. Smaliak , A. V. Baranovsky , F. A. Lakhvich

Abstract

Synthesis of regioisomeric 8-trifluoromethyl-4,5-dihydro-3H-imidazo[4',5':5,6]benz[1,2-d]isoxazoles and 8-trifluoromethyl-4,5-dihydro-3H-imidazo[4',5':3,4]benz[1,2-c]isoxazolones was realized by one-pot oxidation of 3-trifluromethyl-6,7-dihydrobenz[d]- or [c]isoxazoles with selenium dioxide in glacial acetic acid followed by a condensation of formed in situ 3-trifluromethyl-6,7-dihydrobenz[d]- or [c]isoxazole-4,5-diones with benzaldehydes in the presence of ammonium acetate.


中文翻译:

一锅法合成三氟甲基取代的咪唑并苯并[1,2-d]-和-[1,2-c]异恶唑

摘要

区域异构的8-三氟甲基-4,5-二氢-3 H-咪唑并[4',5':5,6]苯并[1,2- d ]异恶唑和8-三氟甲基-4,5-二氢-3 H -咪唑并[4',5':3,4]苯并[1,2 -c ]异恶唑酮是通过用硒一锅氧化3-三氟甲基-6,7-二氢苯并[ d ]-或[ c ]异恶唑来实现的在冰醋酸中加入二氧化氯,然后在乙酸铵存在下,将形成的原位3-三氟甲基-6,7-二氢苯并[ d ]-或[ c ]异恶唑-4,5-二酮与苯甲醛缩合。
更新日期:2020-06-20
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