Facile synthesis of novel spiro[azetidine-2,4′(1′<i>H</i>)-isoquinoline-1′,3′,4(2′<i>H</i>)-triones]
作者:Michael S. Malamas
DOI:10.1002/jhet.5570310254
日期:1994.3
A convenient general method for the synthesis of a new heterocycle, spiro[azetidine-2,4′(1′H)-iso-quinoline-1′,3′,4(2′H)-trione] is described. The key intermediate 2 was prepared by direct halogenation of position-4 of acid 3 with thionyl chloride, and subsequent treatment of the generated 4-Cl, 4-acetyl chloride 11 with a THF/NH3 solution at low temperature.
为一个新的杂环,螺合成的方便的一般方法[氮杂环丁烷-2,4' - (1' ħ) -异喹啉-1',3',4(2' ħ) -三酮]进行说明。通过用亚硫酰氯直接卤化酸3的4位,然后在低温下用THF / NH 3溶液处理生成的4-Cl,4-乙酰氯11,来制备关键中间体2。