Condensation of Carboxylic Acids with Non-Nucleophilic <i>N</i>-Heterocycles and Anilides Using Boc<sub>2</sub>O
作者:Atsushi Umehara、Hirofumi Ueda、Hidetoshi Tokuyama
DOI:10.1021/acs.joc.6b02097
日期:2016.11.18
A novel condensation reaction of carboxylic acids with various non-nucleophilic N-heterocycles and anilides was developed. The reaction proceeds in the presence of di-tert-butyl dicarbonate (Boc2O), catalytic 4-(dimethylamino)pyridine (DMAP), and 2,6-lutidine and is applicable to the acylation of a wide range of non-nucleophilic nitrogen compounds, including indoles, pyrroles, pyrazole, carbazole,
开发了一种新型的羧酸与各种非亲核N-杂环和苯甲酸酯的缩合反应。在二-的存在下该反应进行叔丁基酯(BOC 2 O),催化4-(二甲氨基)吡啶(DMAP),和2,6-二甲基吡啶,并适用于范围广泛的非亲核的酰化具有高官能团相容性的氮化合物,包括吲哚,吡咯,吡唑,咔唑,内酰胺,恶唑烷酮和苯甲酸酯。还研究了吲哚,羧酸和苯胺的范围。