Highly Chemoselective Acylation of Substituted Aminophenols with 3-(Trimethylacetyl)-1,3-thiazolidine-2-thione
作者:Wei-Min Dai、Yuk King Cheung、Kit Wan Tang、Pui Yiu Choi、Suet Lam Chung
DOI:10.1016/0040-4020(95)00783-5
日期:1995.11
A general procedure for chemoselective acylation of substituted aminophenols has been developed. The N-acylated products 7 and 10a-h were prepared by treating the aminophenols with 3 (trimethylacetyl)-1,3-thiazolidine-2-thione (1) in refluxing THF in 70–100% yield. The esters 8 and 13d,b,j of 3- and 4-amino phenols could be obtained in 70–94% yield by treating with NaH and 1.
已经开发了取代氨基酚的化学选择性酰化的一般方法。所述Ñ -acylated制品7和图10A-H是通过用3(三甲基乙酰基)氨基苯酚制备-1,3-噻唑烷-2-硫酮(1)在70-100%收率回流THF。通过用NaH和1处理,可以以70-94%的收率获得3-和4-氨基苯酚的酯8和13d,b,j。