Convenient synthesis of amides, esters, and thioesters using 2,2'-oxalyldi(2,3-dihydro-3-oxobenzisosulfonazole).
作者:Tokujiro KITAGAWA、Hiroko KURODA、Keiko IIDA、Miyuki ITO、Miwa NAKAMURA
DOI:10.1248/cpb.37.3225
日期:——
Potassium salts (22) of various carboxylic acids readily react with 2, 2'-oxalyldi(2, 3-dihydro-3-oxobenzisosulfonazole) (17) to form the corresponding 2-acyl-2, 3-dihydro-3-oxobenzisosulfonazoles (24) as intermediates, which undergo aminolysis, alcoholysis, and thioalcoholysis to afforded amides (5), esters (6), and thioesters (7), respectively. These findings show that 17 can be conveniently used as a condensing agent for the synthesis of carboxylic acid derivatives (5, 6 or 7).
各种羧酸的钾盐(22)容易与2, 2'-草酰二(2, 3-二氢-3-氧代苯并异磺酰胺)(17)反应,形成相应的2-酰基-2, 3-二氢-3-氧代苯并异磺酰胺(24)作为中间体,这些中间体通过胺解、醇解和硫醇解分别得到酰胺(5)、酯(6)和硫酯(7)。这些发现表明,17可以方便地用作合成羧酸衍生物(5、6或7)的缩合剂。