Реакция #4341

Уравнение реакции

phosgene

2-[2-(2-methylthioethoxy)-phenyl]-hydrazinecarboxylic acid methyl ester

→

2-(chlorocarbonyl)-2-[2-(2-methylthioethoxy)-phenyl]-hydrazinecarboxylic acid methyl ester

Растворители

toluene

toluene

Условия реакции

Обработка

1. 1
   Другоеthe solvent is then removed
2. 2
   ДругоеRecrystallisation of the residue in ethyl alcohol
3. 3
   Другоеyields the compound No

Методика

80 ml of a 20% solution of phosgene in toluene are added at 20° C. to 14.1 g of 2-[2-(2-methylthioethoxy)-phenyl]-hydrazinecarboxylic acid methyl ester in 130 ml of toluene. The reaction mixture is subsequently heated for 3 hours at 90° C., and the solvent is then removed. Recrystallisation of the residue in ethyl alcohol yields the compound No. 1.1 of the formula ##STR63## having a melting point of 55°-57° C.

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