One-Pot Synthesis of Trifluoromethylated Quinazolin-4(3<i>H</i>)-ones with Trifluoroacetic Acid as CF<sub>3</sub> Source
作者:Sofia Almeida、Roger Marti、Ennio Vanoli、Stefan Abele、Simone Tortoioli
DOI:10.1021/acs.joc.8b00389
日期:2018.5.4
A novel and convenient one-pot sequential cascade method for the preparation of 2-trifluoromethylquinazolin-4(3H)-ones is described. Trifluoroacetic acid (TFA) was employed as inexpensive and readily available CF3 source, which in the presence of T3P was condensed with a variety of anthranilic acids and amines to provide the products in up to 75% yield. The protocol was proved to be robust on 80 g
描述了一种新颖且方便的一锅顺序级联方法,用于制备2-三氟甲基喹唑啉-4(3 H)-ones。三氟乙酸(TFA)被用作廉价且易于获得的CF 3源,在T3P存在下将其与多种邻氨基苯甲酸和胺进行缩合以提供高达75%收率的产物。该协议在80 g规模上被证明是鲁棒的,并且通过衍生化为其他有用的构建基块证明了所制备的quinazolinon-4-ones的合成多功能性。