| 摘要 |
PROBLEM TO BE SOLVED: To provide an efficient, inexpensive and selective method for producing a triazolopyrimidine derivative. SOLUTION: The method comprises the steps of quickly preparing diamino-1,2,4-triazole from a dialkylcyanodithioiminocarbonate, efficiently protecting and then deprotecting the amino groups, and selectively condensing the resultant imine compound with anα,β-unsaturated acid derivative. COPYRIGHT: (C)2004,JPO
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