Water → HCID 68428433, 화합물

HRID 2186705노트

반응식

HRID 2186705 반응식
[C:1]([O:5][C:6]([N:8]1[CH:12]=[CH:11][CH:10]=[C:9]1[C:13]1[CH:14]=[C:15]2[C:19](=[CH:20][CH:21]=1)[NH:18][C:17](=[O:22])[C:16]2([CH3:24])[CH3:23])=[O:7])([CH3:4])([CH3:3])[CH3:2].ClS([N:29]=[C:30]=O)(=O)=O.CN(C=O)C.O>C1COCC1>[C:1]([O:5][C:6]([N:8]1[CH:12]=[CH:11][CH2:10][C:9]1([C:13]1[CH:14]=[C:15]2[C:19](=[CH:20][CH:21]=1)[NH:18][C:17](=[O:22])[C:16]2([CH3:24])[CH3:23])[C:30]#[N:29])=[O:7])([CH3:4])([CH3:2])[CH3:3]

참가 물질

6

반응물 4

HCID 962WaterHCID 6228DimethylformamideHCID 70918Chlorosulfonyl isocyanateHCID 54549067HCID 54549067, 화합물

생성물 1

HCID 68428433HCID 68428433, 화합물수율 50%

시약·촉매·용매 1

HCID 8028Tetrahydrofuran용매

실험 절차

To a solution 2-(3,3-dimethyl-2-oxo-2,3-dihydro-1H-indol-5-yl)-pyrrole-1-carboxylic acid tert-butyl ester (0.39 g, 1.2 mmol) in THF (anhydrous, 9 mL) at −78° C. was added chlorosulfonyl isocyanate (1.15 eq, 0.12 mL, 1.4 mmol). After 120 min, DMF (20 eq, 1.8 mL, 23 mmol) was added and the reaction was allowed to warm to room temperature. The reaction mixture was poured into water (25 mL) and extracted with ethyl acetate (2×50 mL). The organic layers were combined, washed with brine (50 mL), dried over magnesium sulfate, filtered and concentrated in vacuo. Purification via flash column chromatography on silica gel (1:3 ethyl acetate/hexane) gave 2-(3,3-dimethyl-2-oxo-2,3-dihydro-1H-indol-5-yl)-2-cyanopyrrole-1-carboxylic acid tert-butyl ester (0.21 g, 50%) as a white solid: mp 158.6. 1H NMR (DMSO-d6; 300 MHz) δ1.27 (s, 6H), 1.33 (s, 9H), 6.40 (d, 1H, J=3.8 Hz), 6.90 (d, 1H, J=8.0 Hz), 7.19 (dd, 1H, J=1.8, 8.0 Hz), 7.30 (d, 1H, J=1.5 Hz), 10.50 (s, 1 H). MS m/z 350 (M−H)−. Calcd for C19H22N2O3: C, 68.36; H, 6.02; N, 11.96. Found: C, 66.79; H, 6.03; N, 11.02.

후처리

  1. extractionextracted with ethyl acetate (2×50 mL)
  2. washwashed with brine (50 mL)
  3. dry with materialdried over magnesium sulfate
  4. filtrationfiltered
  5. concentrationconcentrated in vacuo
  6. customPurification via flash column chromatography on silica gel (1:3 ethyl acetate/hexane)

출처 및 근거

ORD 기록
ord-9b7ea1bea17b433689832d4ac0c21ee8
출처 데이터셋
uspto-grants-2002_06
특허 번호
US06407101B1

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