Convenient Preparation of <i>N</i>-Acylbenzoxazines from Phenols, Nitriles, and DMSO Initiated by a Catalytic Amount of (COCl)<sub>2</sub>
作者:Hao Wang、Zeyu Xi、Shuai Huang、Rui Ding、Yang Gao、Yongguo Liu、Baoguo Sun、Hongyu Tian、Sen Liang
DOI:10.1021/acs.joc.0c02768
日期:2021.4.2
A convenient preparation method of N-acylbenzoxazines has been developed, in which phenols react with nitriles and dimethyl sulfoxide (DMSO) in the presence of a catalytic amount of (COCl)2 in CH3CN or chloroform to afford the corresponding N-acylbenzoxazines in moderate-to-good yields. DMSO acts as a source of HCHO, which is generated in situ from the decomposition of a methoxydimethylsulfonium salt
已经开发了一种方便的N-酰基苯并恶嗪的制备方法,其中在催化量的(COCl)2在CH 3 CN或氯仿中,苯酚与腈和二甲基亚砜(DMSO)反应,得到相应的N-酰基苯并恶嗪。中等至良好的收益率。DMSO充当HCHO的来源,它是由甲氧基二甲基s盐的分解原位生成的。提出了甲氧基二甲基s盐的再生循环,其由催化量的(COCl)2引发。