1-(4-Bromophenyl)-4-methylpiperazine → N,N-Dimethyl-4-{2-[4-(4-methyl-piperazin-1-yl)-phenylamino]-[1,2,4]triazolo[1,5-a]pyridin-8-yl}-benzenesulfonamide

HRID 1889787Notes

Reaction equation

HRID 1889787 reaction equation
[NH2:1][C:2]1[N:22]=[C:5]2[C:6]([C:10]3[CH:15]=[CH:14][C:13]([S:16]([N:19]([CH3:21])[CH3:20])(=[O:18])=[O:17])=[CH:12][CH:11]=3)=[CH:7][CH:8]=[CH:9][N:4]2[N:3]=1.Br[C:24]1[CH:29]=[CH:28][C:27]([N:30]2[CH2:35][CH2:34][N:33]([CH3:36])[CH2:32][CH2:31]2)=[CH:26][CH:25]=1.C1(P(C2CCCCC2)C2C=CC=CC=2C2C=CC=CC=2P(C2CCCCC2)C2CCCCC2)CCCCC1>>[CH3:21][N:19]([CH3:20])[S:16]([C:13]1[CH:12]=[CH:11][C:10]([C:6]2[C:5]3[N:4]([N:3]=[C:2]([NH:1][C:24]4[CH:25]=[CH:26][C:27]([N:30]5[CH2:35][CH2:34][N:33]([CH3:36])[CH2:32][CH2:31]5)=[CH:28][CH:29]=4)[N:22]=3)[CH:9]=[CH:8][CH:7]=2)=[CH:15][CH:14]=1)(=[O:18])=[O:17]

Participants

4

Reactant 3

HCID 118176751-(4-Bromophenyl)-4-methylpiperazineHCID 249469872,2'-Bis(dicyclohexylphosphino)-1,1'-biphenylHCID 674815054-(2-Amino-[1,2,4]triazolo[1,5-a]pyridin-8-yl)-N,N-dimethyl-benzenesulfonamide

Product 1

HCID 67478895N,N-Dimethyl-4-{2-[4-(4-methyl-piperazin-1-yl)-phenylamino]-[1,2,4]triazolo[1,5-a]pyridin-8-yl}-benzenesulfonamide

Procedure

4-(2-Amino-[1,2,4]triazolo[1,5-a]pyridin-8-yl)-N,N-dimethyl-benzenesulfonamide was prepared from 8-bromo-[1,2,4]triazolo[1,5-a]pyridin-2-ylamine (150.0 mg, 0.7041 mmol) and N,N-dimethyl-4-(4,4,5,5-tetramethyl-[1,3,2]dioxaborolan-2-yl)-benzenesulfonamide (210.0 mg, 0.6748 mmol) in a manner analogous to Step 2c. The reaction product was isolated as a tan solid (0.074 g, 34%). MP=188-190° C. 1H NMR (400 MHz, (D3C)2SO, δ, ppm): 8.63 (d, J=6.4 Hz, 1H), 8.38 (d, J=8.2 Hz, 2H), 7.88-7.82 (m, 3H), 7.03 (t, J=6.8 Hz, 1H), 6.21 (br s, 2H), 2.66 (s, 6H). MS=318 (MH)+. 54b) N,N-Dimethyl-4-{2-[4-(4-methyl-piperazin-1-yl)-phenylamino]-[1,2,4]triazolo[1,5-a]pyridin-8-yl}-benzenesulfonamide was prepared from 4-(2-amino-[1,2,4]triazolo[1,5-a]pyridin-8-yl)-N,N-dimethyl-benzenesulfonamide (75.0 mg, 0.236 mmol) and 1-(4-bromo-phenyl)-4-methyl-piperazine (75.0 mg, 0.294 mmol) with 2,2′-bis-dicyclohexylphosphanyl-biphenyl (48.0 mg, 0.0878 mmol) as the ligand in a manner analogous to Step 2d. The title compound was isolated as a yellow foam (0.034 g, 29%). 1H NMR (400 MHz, CDCl3, δ, ppm): 8.45 (d, J=6.7 Hz, 1H), 8.22 (d, J=8.1 Hz, 2H), 7.91 (d, J=7.8 Hz, 2H), 7.63 (d, J=6.3 Hz, 1H), 7.49 (d, J=7.8 Hz, 2H), 7.00-6.95 (m, 3H), 6.69 (s, 1H), 3.20-3.15 (m, 4H), 2.78 (s, 6H), 2.63-2.58 (m, 4H), 2.36 (s, 3H). MS=492 (MH)+.

Sources & evidence

ORD record
ord-1bcc04b8925b419aa07f4e3d53978ab2
Source dataset
uspto-grants-2013_08
Patent number
US08501936B2

Reaction notes

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