Methyl 3-amino-2-thiophenecarboxylate → HCID 5178717, 화합물
반응식
[CH3:1][O:2][C:3]([C:5]1[S:6][CH:7]=[CH:8][C:9]=1[NH2:10])=[O:4]>C(CC(OC)=O)#N>[CH3:1][O:2][C:3]([C:5]1[S:6][CH:7]=[CH:8][C:9]=1[NH:10][C:3](=[O:2])[CH2:5][C:9]#[N:10])=[O:4]참가 물질
3
실험 절차
A solution of methyl-3-amino-thiophene-2-carboxylate (13 g, 82.70 mmol) in neat methyl cyanoacetate (40 mL) was heated at 210° C. for 10 h. The solution was cooled and excess methyl cyanoacetate was distilled off under vacuum. The residue was taken in methanol, sonicated briefly, and filtered. The solids were washed by cold methanol and dried to yield 9.3 g (50%) of 3-(2-cyano-acetylamino)-thiophene-2-carboxylic acid methyl ester as white solids. MP 146° C.; 1H NMR (400 MHz, DMSO-d6) δ 4.18 (s, 2H), 7.86 (d, J=5.2 Hz, 1H), 7.93 (d, J=5.2 Hz, 1H), 10.25 (s, 1H) ppm; MS m/z=225 amu (M++1).
후처리
- temperatureThe solution was cooled
- distillationexcess methyl cyanoacetate was distilled off under vacuum
- customsonicated briefly
- filtrationfiltered
- washThe solids were washed by cold methanol
- customdried
출처 및 근거
- ORD 기록
- ord-d744d1e5b27446b5b3e6125be36e4561
- 출처 데이터셋
- uspto-grants-2008_04
- 특허 번호
- US07365200B2
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