تفاعل #1769055

معادلة التفاعل

benzyl alcohol

1,4,5,6-Tetrahydropyrimidine-5-carboxylic acid hydrochloride

thionyl chloride

ethyl ether

→

product

المردود 76.0%

Benzyl 1,4,5,6-Tetrahydropyrimidine-5-carboxylate Hydrochloride

المردود 76.0%

ظروف التفاعل

المعالجة

1. 1
   أخرىprecipitation
2. 2
   أخرىThe white solids were collected
3. 3
   أخرىcrystallized from methanol/THF

الإجراء التجريبي

1,4,5,6-Tetrahydropyrimidine-5-carboxylic acid hydrochloride (1.0 g, 6.1 mmol) was suspended in dry benzyl alcohol (20 ml). To the mixture was added thionyl chloride (0.76 g, 6.39 mmol) and the resulting mixture was heated in an oil bath at 80° C. for 24 h. The clear solution was poured to anhydrous ethyl ether (100 ml) to induce precipitation. The white solids were collected and crystallized from methanol/THF to give 1.18 g (76%) of product (mp 113°-114° C.). 300 MHz nmr indicated the product. Microanalysis calc.: C 56.58, H 5.89, N 11.00; found: C 56.34, H 6.03, N 11.19.

المصدر