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,方酸与脲及

物顺利
脱水
,
成了一类方酸单酰胺化
物——氨甲酰类氮氧方酸3。
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