tert-Butyl 4-(3-aminophenyl)piperazine-1-carboxylate → 4-{3-[8-(4-Methanesulfonyl-phenyl)-[1,2,4]triazolo[1,5-a]pyridin-2-ylamino]-phenyl}-piperazine-1-carboxylic acid tert-butyl ester

HRID 472465

Reaction equation

HRID 472465 reaction equation
Cl[C:2]1[N:20]=[C:5]2[C:6]([C:10]3[CH:15]=[CH:14][C:13]([S:16]([CH3:19])(=[O:18])=[O:17])=[CH:12][CH:11]=3)=[CH:7][CH:8]=[CH:9][N:4]2[N:3]=1.[C:21]([O:25][C:26]([N:28]1[CH2:33][CH2:32][N:31]([C:34]2[CH:39]=[CH:38][CH:37]=[C:36]([NH2:40])[CH:35]=2)[CH2:30][CH2:29]1)=[O:27])([CH3:24])([CH3:23])[CH3:22].C1(P(C2CCCCC2)C2C=CC=CC=2C2C=CC=CC=2P(C2CCCCC2)C2CCCCC2)CCCCC1>>[C:21]([O:25][C:26]([N:28]1[CH2:33][CH2:32][N:31]([C:34]2[CH:39]=[CH:38][CH:37]=[C:36]([NH:40][C:2]3[N:20]=[C:5]4[C:6]([C:10]5[CH:15]=[CH:14][C:13]([S:16]([CH3:19])(=[O:18])=[O:17])=[CH:12][CH:11]=5)=[CH:7][CH:8]=[CH:9][N:4]4[N:3]=3)[CH:35]=2)[CH2:30][CH2:29]1)=[O:27])([CH3:24])([CH3:22])[CH3:23]

Participants

4

Reactant 3

HCID 22330182tert-Butyl 4-(3-aminophenyl)piperazine-1-carboxylateHCID 249469872,2'-Bis(dicyclohexylphosphino)-1,1'-biphenylHCID 674814372-Chloro-8-(4-methanesulfonyl-phenyl)-[1,2,4]triazolo[1,5-a]pyridine

Product 1

HCID 596124154-{3-[8-(4-Methanesulfonyl-phenyl)-[1,2,4]triazolo[1,5-a]pyridin-2-ylamino]-phenyl}-piperazine-1-carboxylic acid tert-butyl ester

Procedure

179 c) 4-{3-[8-(4-Methanesulfonyl-phenyl)-[1,2,4]triazolo[1,5-a]pyridin-2-ylamino]-phenyl}-piperazine-1-carboxylic acid tert-butyl ester was prepared from 2-chloro-8-(4-methanesulfonyl-phenyl)-[1,2,4]triazolo[1,5-a]pyridine (500.0 mg, 1.625 mmol) and 4-(3-Amino-phenyl)-piperazine-1-carboxylic acid tert-butyl ester (500.0 mg, 1.803 mmol) with 2,2′-bis-dicyclohexylphosphanyl-biphenyl (90.0 mg, 0.165 mmol) as the ligand in a manner analogous to Example 2d. Product isolated as a yellow foam (0.70 g, 79%). 1H NMR (400 MHz, CDCl3, δ, ppm): 8.51 (d, J=6.6 Hz, 1H), 8.24 (d, J=8.3 Hz, 2H), 8.08 (d, J=8.4 Hz, 2H), 7.66 (d, J=7.4 Hz, 1H), 7.32 (s, 1H), 7.24 (t, J=8.1 Hz, 1H), 7.05-6.99 (m, 2H), 6.89 (s, 1H), 6.59 (d, J=8.2 Hz, 1H), 3.63-3.58 (m, 4H), 3.22-3.17 (m, 4H), 3.10 (s, 3H), 1.50 (s, 9H). MS=549 (MH)+.

Sources & evidence

ORD record
ord-75c612cf363b40649191e10b7429c039
Source dataset
uspto-grants-2014_01
Patent number
US08633173B2

Linked notes

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