The reaction of 2-(alkylamino)-3-(trifluoroacetyl)butenedioates 2a-b with alkyl and aryl hydrazines in ether provides 1,6-dihydro-6-oxo-3-(trifluoromethyl)-4-pyridazinecarboxylates as their alkylamine salts 3a-g. The structures of these products are substantiated using 2D nmr and 15N nmr techniques.
2-(烷基
氨基)-3-(三
氟乙酰基)
丁烯二酸酯2a-b与烷基和芳基
肼在醚中的反应提供1,6-二氢-6-氧代-3-(三
氟甲基)-
4-哒嗪羧酸酯作为其烷基胺盐3a -g。这些产品的结构使用2D nmr和15 N nmr技术得以证实。