반응 #1769053

반응 방정식

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

1-propanol

thionyl chloride

→

white crystals

수율 56.0%

n-Propyl 1,4,5,6-Tetrahydropyrimidine-5-carboxylate Hydrochloride

수율 56.0%

반응 조건

후처리

1. 1
   온도the solution was refluxed for 22 h
2. 2
   기타The solvent was evaporated in vacuo to dryness
3. 3
   기타The residue was crystallized from methanol/THF

실험 절차

1,4,5,6-Tetrahydropyrimidine-5-carboxylic acid hydrochloride (1.5 g, 9.1 mmol) was dissolved in 1-propanol (30 ml). To the mixture was added thionyl chloride (1.1 g, 9.1 mmol) and the solution was refluxed for 22 h. The solvent was evaporated in vacuo to dryness. The residue was crystallized from methanol/THF to give 1.06 g (56%) of white crystals, mp 128°-130° C. 300 MHz nmr indicated product. Microanalysis calc.: C 46.49, H 7.26, N 13.56, found: C 46.21, H 6.96, N 17.41.

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