Diisopropylethylamine → 1'-[2-(5-Methyl-3-trifluoromethyl-pyrazol-1-yl)-acetyl]-1',2',3',4',5',6'-hexahydro-[2,4']bipyridinyl-6-carboxylic acid methyl-(1,2,3,4-tetrahydro-naphthalen-1-yl)-amide

HRID 385301Notes

Reaction equation

HRID 385301 reaction equation
[CH3:1][C:2]1[N:6]([CH2:7][C:8]([OH:10])=O)[N:5]=[C:4]([C:11]([F:14])([F:13])[F:12])[CH:3]=1.Cl.[CH3:16][N:17]([CH:32]1[C:41]2[C:36](=[CH:37][CH:38]=[CH:39][CH:40]=2)[CH2:35][CH2:34][CH2:33]1)[C:18]([C:20]1[N:25]=[C:24]([CH:26]2[CH2:31][CH2:30][NH:29][CH2:28][CH2:27]2)[CH:23]=[CH:22][CH:21]=1)=[O:19].C(N(C(C)C)CC)(C)C.F[P-](F)(F)(F)(F)F.N1(O[P+](N(C)C)(N(C)C)N(C)C)C2C=CC=CC=2N=N1>CN(C=O)C>[CH3:16][N:17]([CH:32]1[C:41]2[C:36](=[CH:37][CH:38]=[CH:39][CH:40]=2)[CH2:35][CH2:34][CH2:33]1)[C:18]([C:20]1[N:25]=[C:24]([CH:26]2[CH2:27][CH2:28][N:29]([C:8](=[O:10])[CH2:7][N:6]3[C:2]([CH3:1])=[CH:3][C:4]([C:11]([F:14])([F:13])[F:12])=[N:5]3)[CH2:30][CH2:31]2)[CH:23]=[CH:22][CH:21]=1)=[O:19]

Participants

6

Reactant 4

HCID 81531DiisopropylethylamineHCID 151348Benzotriazol-1-yloxy-tris(dimethylamino)phosphonium hexafluorophosphateHCID 5961182-(5-methyl-3-(trifluoromethyl)-1H-pyrazol-1-yl)acetic acidHCID 669731291',2',3',4',5',6'-Hexahydro-[2,4']bipyridinyl-6-carboxylic acid methyl-(1,2,3,4-tetrahydro-naphthalen-1-yl)-amide hydrochloride salt

Product 1

HCID 666863761'-[2-(5-Methyl-3-trifluoromethyl-pyrazol-1-yl)-acetyl]-1',2',3',4',5',6'-hexahydro-[2,4']bipyridinyl-6-carboxylic acid methyl-(1,2,3,4-tetrahydro-naphthalen-1-yl)-amideYield 71.3%

Reagents, catalysts & solvents 1

HCID 6228DimethylformamideSolvent

Procedure

To a solution of (5-methyl-3-trifluoromethyl-pyrazol-1-yl)-acetic acid (81 mg, 0.39 mmol), 1′,2′,3′,4′,5′,6′-hexahydro-[2,4′]bipyridinyl-6-carboxylic acid methyl-(1,2,3,4-tetrahydro-naphthalen-1-yl)-amide hydrochloride salt (150 mg, 0.39 mmol), and diisopropylethylamine (0.41 mL, 0.39 mmol) in DMF (10 mL) was added dropwise BOP (191 mg, 0.39 mmol) at RT. After stirring overnight at RT, the reaction mixture was poured on water (10 mL) and extracted with ethylacetate (20 mL). The aqueous phase was re-extracted with ethylacetate (20 mL). The combined organic layers were washed with aq. sat. sodium bicarbonate solution (30 mL), 1M HCl solution (30 mL) and brine (30 mL), dried over sodium sulfate, filtered, and evaporated under reduce pressure. The crude mixture was purified by column chromatography on silica gel (ethylacetate) to give 1′-[2-(5-methyl-3-trifluoromethyl-pyrazol-1-yl)-acetyl]-1′,2′,3′,4′,5′,6′-hexahydro-[2,4′]bipyridinyl-6-carboxylic acid methyl-(1,2,3,4-tetrahydro-naphthalen-1-yl)-amide (150 mg, 71%). M.p 62-65° C. 1H-NMR (400 MHz, CDCl3): δ=1.67-2.02 (m, 6H), 2.18-2.22 (m, 1H), 2.30 (s, 3H), 2.71 (s, 3H), 2.72-2.75 (m, 2H), 3.17-3.27 (m, 2H), 3.97-4.05 (m, 2H), 4.58-4.78 (m, 2H), 4.96 (s, 2H), 5.05-5.15 (m, 1H), 6.33 (s, 1H), 7.10-7.24 (m, 4H), 7.28-7.32 (m, 1H), 7.57-7.58 (m, 1H), 7.76-7.78 (m, 1H).

Workup

  1. additionthe reaction mixture was poured on water (10 mL)
  2. extractionextracted with ethylacetate (20 mL)
  3. extractionThe aqueous phase was re-extracted with ethylacetate (20 mL)
  4. washThe combined organic layers were washed with aq. sat. sodium bicarbonate solution (30 mL), 1M HCl solution (30 mL) and brine (30 mL)
  5. dry with materialdried over sodium sulfate
  6. filtrationfiltered
  7. customevaporated
  8. customThe crude mixture was purified by column chromatography on silica gel (ethylacetate)

Sources & evidence

ORD record
ord-3c9a5f3158374486bd54a0ac801abdbd
Source dataset
uspto-grants-2013_02
Patent number
US08367844B2

Reaction notes

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