Triethylamine → (3S,3aR)-2-(3-chloro-4-cyanophenyl)-3-cyclopentyl-N-(2-(methylsulfonyl)ethyl)-3,3a,4,5-tetrahydro-2H-benzo[g]indazole-7-carboxamide

HRID 505752Notes

Reaction equation

HRID 505752 reaction equation
[Cl:1][C:2]1[CH:3]=[C:4]([N:10]2[C@@H:18]([CH:19]3[CH2:23][CH2:22][CH2:21][CH2:20]3)[C@@H:17]3[C:12]([C:13]4[CH:27]=[CH:26][C:25]([C:28]([OH:30])=O)=[CH:24][C:14]=4[CH2:15][CH2:16]3)=[N:11]2)[CH:5]=[CH:6][C:7]=1[C:8]#[N:9].ON1C2C=CC=CC=2N=N1.C(N(CC)CC)C.F[B-](F)(F)F.N1(OC(N(C)C)=[N+](C)C)C2C=CC=CC=2N=N1.[CH3:70][S:71]([CH2:74][CH2:75][NH2:76])(=[O:73])=[O:72]>CN(C)C=O.C(#N)C.O>[Cl:1][C:2]1[CH:3]=[C:4]([N:10]2[C@@H:18]([CH:19]3[CH2:23][CH2:22][CH2:21][CH2:20]3)[C@@H:17]3[C:12]([C:13]4[CH:27]=[CH:26][C:25]([C:28]([NH:76][CH2:75][CH2:74][S:71]([CH3:70])(=[O:73])=[O:72])=[O:30])=[CH:24][C:14]=4[CH2:15][CH2:16]3)=[N:11]2)[CH:5]=[CH:6][C:7]=1[C:8]#[N:9]

Participants

8

Reactant 5

HCID 8471TriethylamineHCID 757711-HydroxybenzotriazoleHCID 2733207O-(Benzotriazol-1-yl)-N,N,N',N'-tetramethyluronium tetrafluoroborateHCID 43405612-(Methylsulfonyl)ethanamineHCID 46871935PF-03882845

Product 1

HCID 66722788(3S,3aR)-2-(3-chloro-4-cyanophenyl)-3-cyclopentyl-N-(2-(methylsulfonyl)ethyl)-3,3a,4,5-tetrahydro-2H-benzo[g]indazole-7-carboxamideYield 52%

Reagents, catalysts & solvents 2

HCID 6228DimethylformamideSolventHCID 18373917Acetonitrile--water (1/1)Solvent

Procedure

To a solution of (3S,3aR)-2-(3-chloro-4-cyanophenyl)-3-cyclopentyl-3,3a,4,5-tetrahydro-2H-benzo[g]indazole-7-carboxylic acid, Example 15 (90 mg, 0.20 mmol) in N,N-dimethylformamide (1 mL) was added 1-hydroxybenzotriazole (43 mg, 0.32 mmol), triethylamine (0.06 mL, 0.40 mmol) and O-benzotriazol-1-yl-N,N,N′,N′-tetramethyluronium tetrafluoroborate (103 mg, 0.32 mmol). The solution was stirred for fifteen minutes followed by addition of 2-(methylsulfonyl)ethanamine (40 mg, 0.32 mmol). The solution was stirred for twenty hours at ambient temperature. The reaction was quenched with water and the resulting yellow solid was collected by vacuum filtration. Chromatography (reverse phase, acetonitrile/water) provided (3S,3aR)-2-(3-chloro-4-cyanophenyl)-3-cyclopentyl-N-(2-(methylsulfonyl)ethyl)-3,3a,4,5-tetrahydro-2H-benzo[g]indazole-7-carboxamide (yellow solid, 55 mg, 52% yield). LC/MS on 4.6×50 mm C-18 column, tR=6.01 minutes (10 to 90% acetonitrile/water over 6 minutes at 2 mL/minute with detection 254 nm, at 50° C.); ES-MS m/z 525 (M+H)

Workup

  1. stirringThe solution was stirred for twenty hours at ambient temperature
  2. customThe reaction was quenched with water
  3. filtrationthe resulting yellow solid was collected by vacuum filtration

Sources & evidence

ORD record
ord-e5ce232a7f0f4fd2b9c6c856aca8721d
Source dataset
uspto-grants-2010_08
Patent number
US07781428B2

Reaction notes

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