ALPHA-(乙酰亚肼基)苯乙酰肼 在
水 作用下,
以
乙醇 为溶剂,
反应 12.0h,
以123 g (76% of theory) of 4-amino-3-methyl-6-phenyl-1,2,4-triazin-5-(4H)-one of melting point 160°-163°C. were obtained的产率得到苯嗪草酮
Novel glyoxylic acid hydrazide-2-acylhydrazones of the formula: ##EQU1## in which R.sup.1 is hydrogen or alkyl, and R.sup.2 is alkyl or optionally substituted phenyl and are prepared by reacting the corresponding glyoxylic acid ester 2-acylhydrazone with hydrazine hydrate. The compounds (I) are useful in preparing herbicidally active 4-amino-1,2,4-triazin-5-one compounds.
Novel glyoxylic acid hydrazide-2-acylhydrazones of the formula: ##STR1## in which R.sup.1 is hydrogen or alkyl, and R.sup.2 is alkyl or optionally substituted phenyl And are prepared by reacting the corresponding glyoxylic acid ester 2-acylhydrazone with hydrazine hydrate. The compounds (I) are useful in preparing herbicidally active 4-amino-1,2,4-triazine-5-one compounds.