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4-Methoxybenzoyl isothiocyanate → tert-Butyl 2-(3-(4-methoxybenzoyl)thioureido)-5,5-dimethyl-5,7-dihydro-4H-thieno[2,3-c]pyran-3-carboxylate

HRID 1616705
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HRID 1616705 반응식
[NH2:1][C:2]1[S:12][C:5]2[CH2:6][O:7][C:8]([CH3:11])([CH3:10])[CH2:9][C:4]=2[C:3]=1[C:13]([O:15][C:16]([CH3:19])([CH3:18])[CH3:17])=[O:14].[CH3:20][O:21][C:22]1[CH:32]=[CH:31][C:25]([C:26]([N:28]=[C:29]=[S:30])=[O:27])=[CH:24][CH:23]=1>C1COCC1>[CH3:20][O:21][C:22]1[CH:23]=[CH:24][C:25]([C:26]([NH:28][C:29](=[S:30])[NH:1][C:2]2[S:12][C:5]3[CH2:6][O:7][C:8]([CH3:11])([CH3:10])[CH2:9][C:4]=3[C:3]=2[C:13]([O:15][C:16]([CH3:19])([CH3:18])[CH3:17])=[O:14])=[O:27])=[CH:31][CH:32]=1
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4

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HCID 1401364-Methoxybenzoyl isothiocyanateHCID 86731954tert-butyl 2-amino-5,5-dimethyl-5,7-dihydro-4H-thieno[2,3-c]pyran-3-carboxylate

생성물 1

HCID 86731958tert-Butyl 2-(3-(4-methoxybenzoyl)thioureido)-5,5-dimethyl-5,7-dihydro-4H-thieno[2,3-c]pyran-3-carboxylate수율 78.3%

시약·촉매·용매 1

HCID 8028Tetrahydrofuran용매2회

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온도
50 °C

실험 절차

A solution of tert-butyl 2-amino-5,5-dimethyl-5,7-dihydro-4H-thieno[2,3-c]pyran-3-carboxylate (1.0 mL, 0.083 M, 0.083 mmol) in THF was added to a solution of 4-methoxybenzoyl isothiocyanate (51 mg, 0.26 mmol) in THF (1 mL) and heated at 50° C. for 16 hours, then cooled to room temperature. The solvent was removed and EtOH (2 mL) was added. The product was filtered and rinsed with EtOH (3×5 mL). tert-Butyl 2-(3-(4-methoxybenzoyl)thioureido)-5,5-dimethyl-5,7-dihydro-4H-thieno[2,3-c]pyran-3-carboxylate (31 mg, 0.065 mmol, 78% yield) was isolated as a white solid. 1H NMR (400 MHz, CDCl3) δ 14.65 (s, 1H), 8.98 (s, 1H), 7.83 (apparent d, J=8.9 Hz, 2H), 6.91 (apparent d, J=8.9 Hz, 2H), 4.66 (s, 2H), 3.81 (s, 3H), 2.69 (s, 2H), 1.56 (s, 9H), 1.24 (s, 6H). 13C NMR (101 MHz, CDCl3) 173.90, 164.52, 164.49, 163.88, 147.40, 129.93, 129.13, 124.58, 123.65, 118.03, 114.34, 82.36, 70.79, 59.81, 55.62, 38.25, 28.49, 26.48.

후처리

  1. temperaturecooled to room temperature
  2. customThe solvent was removed
  3. additionEtOH (2 mL) was added
  4. filtrationThe product was filtered
  5. washrinsed with EtOH (3×5 mL)

출처 및 근거

ORD 기록
ord-b2ee471140cb46efa259490317787d22
출처 데이터셋
uspto-grants-2014_07
DOI
10.6084/m9.figshare.5104873.v1
특허 번호
US08765803B1

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