A kind of monosubstituted squaric amide ——mono carbamoyl amide of squaric acid 3(MCASAQ) was prepared by the condensation of squaric acid (SQ) with urea or its derivatives in water.
以水为介质,方酸与

衍生物顺利
生脱水缩
,

一类方酸单酰胺化
物——氨甲酰类氮氧方酸3。
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