Diisopropylethylamine → 1,2,3,4-Tetrahydro-naphthalene-1-carboxylic acid (2-{1-[2-(5-methyl-3-trifluoromethyl-pyrazol-1-yl)-acetyl]-piperidin-4-yl}-thiazol-4-yl)amide

HRID 1042051Notes

Reaction equation

HRID 1042051 reaction equation
[NH2:1][C:2]1[N:3]=[C:4]([CH:7]2[CH2:12][CH2:11][N:10]([C:13](=[O:25])[CH2:14][N:15]3[C:19]([CH3:20])=[CH:18][C:17]([C:21]([F:24])([F:23])[F:22])=[N:16]3)[CH2:9][CH2:8]2)[S:5][CH:6]=1.C(N(C(C)C)CC)(C)C.[CH:35]1([C:45](Cl)=[O:46])[C:44]2[C:39](=[CH:40][CH:41]=[CH:42][CH:43]=2)[CH2:38][CH2:37][CH2:36]1>ClCCl>[CH3:20][C:19]1[N:15]([CH2:14][C:13]([N:10]2[CH2:11][CH2:12][CH:7]([C:4]3[S:5][CH:6]=[C:2]([NH:1][C:45]([CH:35]4[C:44]5[C:39](=[CH:40][CH:41]=[CH:42][CH:43]=5)[CH2:38][CH2:37][CH2:36]4)=[O:46])[N:3]=3)[CH2:8][CH2:9]2)=[O:25])[N:16]=[C:17]([C:21]([F:24])([F:23])[F:22])[CH:18]=1

Participants

5

Reactant 3

HCID 81531DiisopropylethylamineHCID 132773111,2,3,4-Tetrahydro-naphthalene-1-carbonyl chlorideHCID 669564011-[4-(4-Amino-thiazol-2-yl)-piperidin-1-yl]-2-(5-methyl-3-trifluoromethyl-pyrazol-1-yl)-ethanone

Product 1

HCID 866661391,2,3,4-Tetrahydro-naphthalene-1-carboxylic acid (2-{1-[2-(5-methyl-3-trifluoromethyl-pyrazol-1-yl)-acetyl]-piperidin-4-yl}-thiazol-4-yl)amideYield 48.2%

Reagents, catalysts & solvents 1

HCID 6344DichloromethaneSolvent2×

Procedure

To a solution of 1-[4-(4-amino-thiazol-2-yl)-piperidin-1-yl]-2-(5-methyl-3-trifluoromethyl-pyrazol-1-yl)-ethanone (120 mg, 0.32 mmol) and diisopropylethylamine (0.2 mL, 0.96 mmol) in dichloromethane (5 mL) is added dropwise a solution of 1,2,3,4-tetrahydro-naphthalene-1-carbonyl chloride (74 mg, 0.38 mmol) in dichloromethane (3 mL) at 0° C. After stirring overnight at RT, the solvent is evaporated and the residue is purified by flash chromatography on silica gel (ethylacetate/cyclohexane 1:1) to give 1,2,3,4-tetrahydro-naphthalene-1-carboxylic acid (2-{1-[2-(5-methyl-3-trifluoromethyl-pyrazol-1-yl)-acetyl]-piperidin-4-yl}-thiazol-4-yl)amide (Compound No. 1.g.011, 82 mg, 48%). M.p.=179.2-181.3° C. 1H-NMR (400 MHz, CDCl3): δ=1.60-1.75 (m, 3H), 1.81-1.89 (m, 2H), 2.05-2.15 (m, 2H), 2.31 (s, 3H), 2.32-2.40 (m, 1H), 2.77-2.94 (m, 3H), 3.05-3.18 (m, 1H), 3.19-3.29 (m, 1H), 3.87 (t, 1H), 3.95-4.04 (m, 1H), 4.50-4.59 (m, 1H), 4.90-5.06 (2d, 2H, diastereotopic protons), 6.32 (s, 1H), 7.25-7.30 (m, 4H), 7.49 (s, 1H), 7.79 (br, 1H). MS: m/z=532 (M+1).

Workup

  1. customthe solvent is evaporated
  2. customthe residue is purified by flash chromatography on silica gel (ethylacetate/cyclohexane 1:1)

Sources & evidence

ORD record
ord-d94f754bbfa747f4b9a3593267193348
Source dataset
uspto-grants-2013_10
Patent number
US08557821B2

Reaction notes

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