Pyridine → 1-[3-t-butyl-1-(1-thioxo-1,2,3,4-tetrahydroisoquinolin-7-yl)-1H-pyrazol-5-yl]-3-(2,3-dichlorophenyl)urea

HRID 1696516Notes

Reaction equation

HRID 1696516 reaction equation
[C:1]([C:5]1[CH:9]=[C:8]([NH2:10])[N:7]([C:11]2[CH:20]=[C:19]3[C:14]([CH2:15][CH2:16][NH:17][C:18]3=[S:21])=[CH:13][CH:12]=2)[N:6]=1)([CH3:4])([CH3:3])[CH3:2].[Cl:22][C:23]1[C:28]([Cl:29])=[CH:27][CH:26]=[CH:25][C:24]=1[N:30]=[C:31]=[O:32].N1C=CC=CC=1>C1COCC1>[C:1]([C:5]1[CH:9]=[C:8]([NH:10][C:31]([NH:30][C:24]2[CH:25]=[CH:26][CH:27]=[C:28]([Cl:29])[C:23]=2[Cl:22])=[O:32])[N:7]([C:11]2[CH:20]=[C:19]3[C:14]([CH2:15][CH2:16][NH:17][C:18]3=[S:21])=[CH:13][CH:12]=2)[N:6]=1)([CH3:4])([CH3:2])[CH3:3]

Participants

5

Reactant 3

HCID 1049PyridineHCID 330501,2-Dichloro-3-isocyanatobenzeneHCID 86620088HCID 86620088, compound

Product 1

HCID 866200871-[3-t-butyl-1-(1-thioxo-1,2,3,4-tetrahydroisoquinolin-7-yl)-1H-pyrazol-5-yl]-3-(2,3-dichlorophenyl)ureaYield 83.3%

Reagents, catalysts & solvents 1

HCID 8028TetrahydrofuranSolvent2×

Procedure

A suspension of 7-(3-t-butyl-5-amino-1H-pyrazol-1-yl)-3,4-dihydroisoquinoline-1(2H)-thione (0.150 g, 0.499 mmol) in THF (3 mL) was added to a solution of 2,3-dichlorophenyl isocyanate (0.141 g, 0.749 mmol), pyridine (0.061 mL, 0.059 g, 0.749 mmol) and THF (3 mL). The flask which contained the starting material was again rinsed with THF (4 mL) and the solution was added to the reaction flask. The resulting yellow suspension was briefly heated with a heat gun, causing the reaction mixture to become clear. After 18 h, the solution was concentrated and the residue was purified by column chromatography to yield 1-[3-t-butyl-1-(1-thioxo-1,2,3,4-tetrahydroisoquinolin-7-yl)-1H-pyrazol-5-yl]-3-(2,3-dichlorophenyl)urea as a yellow solid (203 mg, 83% yield). 1H NMR (400 MHz, acetone-d6): δ 9.60 (brs, 1H), 8.66 (d, J=2.0 Hz, 1H), 8.61 (brs, 1H), 8.26 (dd, J=8.4, and 2.0 Hz, 1H), 8.17 (brs, 1H), 7.68 (dd, J=8.0, and 2.0 Hz, 1H), 7.40 (d, J=8.4 Hz, 1H), 7.30 (t, J=8.2 Hz, 1H), 7.23 (dd, J=7.6, and 1.2 Hz, 1H), 6.48 (s, 1H), 3.62-3.58 (m, 2H), 3.07 (t, J=6.6 Hz, 2H), 1.33 (s, 9H); MS (ESI) m/z: 488.0 (M+H+).

Workup

  1. washwas again rinsed with THF (4 mL)
  2. additionthe solution was added to the reaction flask
  3. temperatureThe resulting yellow suspension was briefly heated with a heat gun
  4. concentrationthe solution was concentrated
  5. customthe residue was purified by column chromatography

Sources & evidence

ORD record
ord-260cf7005c60435f94896657e37f3f4a
Source dataset
uspto-grants-2012_04
Patent number
US08163756B2

Reaction notes

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