tert-Butyl piperazine-1-carboxylate → HCID 136344396, compound

HRID 62213Notes

Reaction equation

[CH3:1][O:2][C:3]1[CH:4]=[C:5]([CH:11]2[CH2:16][CH:15]([C:17]([F:20])([F:19])[F:18])[N:14]3[N:21]=[C:22]([C:24]4[CH:29]=[CH:28][N:27]=[C:26]([C:30](O)=[O:31])[CH:25]=4)[CH:23]=[C:13]3[NH:12]2)[CH:6]=[CH:7][C:8]=1[O:9][CH3:10].[N:33]1([C:39]([O:41][C:42]([CH3:45])([CH3:44])[CH3:43])=[O:40])[CH2:38][CH2:37][NH:36][CH2:35][CH2:34]1>>[CH3:1][O:2][C:3]1[CH:4]=[C:5]([CH:11]2[CH2:16][CH:15]([C:17]([F:20])([F:18])[F:19])[N:14]3[N:21]=[C:22]([C:24]4[CH:29]=[CH:28][N:27]=[C:26]([C:30]([N:36]5[CH2:35][CH2:34][N:33]([C:39]([O:41][C:42]([CH3:45])([CH3:44])[CH3:43])=[O:40])[CH2:38][CH2:37]5)=[O:31])[CH:25]=4)[CH:23]=[C:13]3[NH:12]2)[CH:6]=[CH:7][C:8]=1[O:9][CH3:10]

Participants

Reactant 2

HCID 143452tert-Butyl piperazine-1-carboxylate

HCID 1363443974-(5-(3,4-Dimethoxyphenyl)-7-(trifluoromethyl)-4,5,6,7-tetrahydropyrazolo[1,5-a]pyrimidin-2-yl)picolinic acid

Product 1

HCID 136344396HCID 136344396, compoundYield 44%

Procedure

Example ER-897034 was prepared in two steps from 4-(5-(3,4-dimethoxyphenyl)-7-(trifluoromethyl)-4,5,6,7-tetrahydropyrazolo[1,5-a]pyrimidin-2-yl)picolinic acid (25 mg, 0.056 mmol) and commercially available tert-butyl piperazine-1-carboxylate (31 mg, 0.167 mmol) in a manner similar to that of example D-6 to afford intermediate tert-butyl 4-(4-(5-(3,4-dimethoxyphenyl)-7-(trifluoromethyl)-4,5,6,7-tetrahydropyrazolo[1,5-a]pyrimidin-2-yl)picolinoyl)piperazine-1-carboxylate (15 mg, 0.024 mmol, 44% yield). Then, this intermediate (13 mg, 0.021 mmol) was treated with HCl in a manner similar to that of example ER-897560 to afford the desired product ER-897034 (12.2 mg, 98% yield).

Sources & evidence

ORD record: ord-f2937bc7e17541278b201c74023d5111
Source dataset: uspto-grants-2016_09
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US09446046B2

Reaction notes

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