تفاعل #1116537

معادلة التفاعل

3-Methyl-1-phenylpyrazolin-5-one

2-methylthio-3-methylbenzothiazolium tosylate

Triethylamine

→

4-[-3-methylbenzothiazolinylidene]-3-methyl-1-phenylpyrazolin-5-one

المذيبات

methanol

ظروف التفاعل

المعالجة

1. 1
   ترشيحfiltered
2. 2
   غسيلwashed with methanol
3. 3
   أخرىAfter drying the yield was 2.46 g (78%), mp 159°-162° C., λmax=375 (ε=25,000)

الإجراء التجريبي

3-Methyl-1-phenylpyrazolin-5-one (1.74 g, 0.01 mol) was mixed with 3.68 g (0.01 mol) 2-methylthio-3-methylbenzothiazolium tosylate in 25 ml methanol. Triethylamine (1.01 g, 0.01 mol) was added. The mixture was stirred for one hour, then filtered and washed with methanol. After drying the yield was 2.46 g (78%), mp 159°-162° C., λmax=375 (ε=25,000).

المصدر