Isopropylamine → 6-[3-(4-Fluoro-phenyl)-5-methyl-3H-[1,2,3]-triazol-4-ylmethoxy]-pyridazine-3-carboxylic acid isopropylamide

HRID 402450Notes

Reaction equation

HRID 402450 reaction equation
[F:1][C:2]1[CH:7]=[CH:6][C:5]([N:8]2[C:12]([CH2:13][O:14][C:15]3[N:20]=[N:19][C:18]([C:21]([OH:23])=O)=[CH:17][CH:16]=3)=[C:11]([CH3:24])[N:10]=[N:9]2)=[CH:4][CH:3]=1.CN(C(O[N:33]1N=N[C:35]2C=CC=[CH:39][C:34]1=2)=[N+](C)C)C.[B-](F)(F)(F)F.CCN(C(C)C)C(C)C.C(N)(C)C>CN(C=O)C>[CH:34]([NH:33][C:21]([C:18]1[N:19]=[N:20][C:15]([O:14][CH2:13][C:12]2[N:8]([C:5]3[CH:4]=[CH:3][C:2]([F:1])=[CH:7][CH:6]=3)[N:9]=[N:10][C:11]=2[CH3:24])=[CH:16][CH:17]=1)=[O:23])([CH3:39])[CH3:35]

Participants

6

Reactant 4

HCID 6363IsopropylamineHCID 81531DiisopropylethylamineHCID 2733207O-(Benzotriazol-1-yl)-N,N,N',N'-tetramethyluronium tetrafluoroborateHCID 674982766-[3-(4-fluoro-phenyl)-5-methyl-3H-[1,2,3]triazol-4-ylmethoxy]-pyridazine-3-carboxylic acid

Product 1

HCID 573357006-[3-(4-Fluoro-phenyl)-5-methyl-3H-[1,2,3]-triazol-4-ylmethoxy]-pyridazine-3-carboxylic acid isopropylamideYield 88%

Reagents, catalysts & solvents 1

HCID 6228DimethylformamideSolvent

Procedure

To a solution of 6-[3-(4-fluoro-phenyl)-5-methyl-3H-[1,2,3]triazol-4-ylmethoxy]-pyridazine-3-carboxylic acid (85 mg, 0.26 mmol) and TBTU (92 mg, 0.28 mmol) in DMF (3.0 mL) was added DIPEA (221 μL, 1.29 mmol). Then isopropylamine (25 μL, 0.28 mmol) was added and the mixture was stirred at room temperature under Ar for 30 min. The mixture was then evaporated and purification by chromatography (silica, 50 to 100% ethyl acetate in heptane) afforded the title compound (84 mg, 88%) as a light yellow solid. MS: m/e=371.1 [M+H]+.

Workup

  1. customThe mixture was then evaporated
  2. custompurification by chromatography (silica, 50 to 100% ethyl acetate in heptane)

Sources & evidence

ORD record
ord-50ea9ae5e72c4ab19083bb44d8b385af
Source dataset
uspto-grants-2014_06
Patent number
US08742097B2

Reaction notes

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