Reacción #1375805

Ecuación de reacción

(4-chlorophenyl)(1-methyl-1H-benzotriazole-6-yl)methanone

1,1-dimethylethyl hydrazinecarboxylate

→

1,1-dimethylethyl [(4-chlorophenyl)(1 -methyl-1H-benzotriazol-6-yl)-methylene]hydrazine carboxylate

Rendimiento 59.2%

Disolventes

ethanol

Condiciones de reacción

Tratamiento posterior

1. 1
   Temperaturaat reflux temperature
2. 2
   workup.STIRRINGstirring
3. 3
   workup.WAITwas continued for 2 hours
4. 4
   FiltraciónThe precipitate was filtered off
5. 5
   Lavadowashed with ethanol
6. 6
   Otrodried in vacuo at 50° C.

Procedimiento

A mixture of 27.17 g of (4-chlorophenyl)(1-methyl-1H-benzotriazole-6-yl)methanone, 14.24 g of 1,1-dimethylethyl hydrazinecarboxylate and 80 ml of ethanol was stirred for 21 hours at reflux temperature. The reaction mixture was cooled to room temperature and stirring was continued for 2 hours. The precipitate was filtered off, washed with ethanol and dried in vacuo at 50° C., yielding 22.8 g (59.2%) of 1,1-dimethylethyl [(4-chlorophenyl)(1 -methyl-1H-benzotriazol-6-yl)-methylene]hydrazine carboxylate (interm. 1-b).

Fuente