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 1889935

반응식

HRID 1889935 반응식
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]

참가 물질

4

반응물 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

생성물 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

실험 절차

179 a) A suspension of 1-(3-nitro-phenyl)-piperazine hydrochloride (1.0 g, 4.1 mmol) and potassium carbonate (0.62 g, 4.5 mmol) in acetonitrile (10 mL) at room temperature was added di-tert-butyldicarbonate (1.0 g, 4.6 mmol) and was stirred at room temperature for 3 days. The mixture was poured into water (50 mL) and extracted with dichloromethane (3×50 mL). The combined organic layers were washed with water (50 mL) and saturated aqueous sodium chloride (50 mL). The organic layer was dried over magnesium sulfate, filtered and evaporated under reduced pressure. 4-(3-Nitro-phenyl)-piperazine-1-carboxylic acid tert-butyl ester was isolated as a yellow solid (1.169 g, 93%). 1H NMR (400 MHz, CDCl3, δ, ppm): 7.72 (s, 1H), 7.69 (d, J=8.0 Hz, 1H), 7.39 (t, J=8.2 Hz, 1H), 7.19 (dd, J=8.2, 1.7 Hz, 1H), 3.63-3.58 (m, 4H), 3.27-3.21 (m, 4H), 1.49 (s, 9H). MS=330 (M+Na)+. 179 b) (3-Amino-phenyl)-piperazine-1-carboxylic acid tert-butyl ester was prepared from 4-(3-nitro-phenyl)-piperazine-1-carboxylic acid tert-butyl ester (1.17 g, 3.81 mmol) in a manner analogous to Example 111a. Product isolated as a yellow solid (0.993 g, 94%). 1H NMR (400 MHz, CDCl3, δ, ppm): 7.05 (t, J=7.7 Hz, 1H), 6.35 (d, J=8.8 Hz, 1H), 6.26-6.22 (m, 2H), 3.61 (br s, 2H), 3.57-3.53 (m, 4H), 3.12-3.07 (m, 4H), 1.48 (s, 9H). MS=278 (MH)+. 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)+.

출처 및 근거

ORD 기록
ord-97c1e323a7a8469dbe1c4be89466d0cc
출처 데이터셋
uspto-grants-2013_08
특허 번호
US08501936B2

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