tert-butyl 4-(7-(bis((2-(trimethylsilyl)ethoxy)methyl)amino)pyrazolo[1,5-a]pyrimidin-5-yl)-5,6-dihydropyridine-1(2H)-carboxylate → tert-Butyl 4-(7-(bis((2-(trimethylsilyl)ethoxy)methyl)amino)pyrazolo[1,5-a]pyrimidin-5-yl)piperidine-1-carboxylate

HRID 1913248Notes

Reaction equation

[CH3:1][Si:2]([CH3:39])([CH3:38])[CH2:3][CH2:4][O:5][CH2:6][N:7]([CH2:30][O:31][CH2:32][CH2:33][Si:34]([CH3:37])([CH3:36])[CH3:35])[C:8]1[N:13]2[N:14]=[CH:15][CH:16]=[C:12]2[N:11]=[C:10]([C:17]2[CH2:22][CH2:21][N:20]([C:23]([O:25][C:26]([CH3:29])([CH3:28])[CH3:27])=[O:24])[CH2:19][CH:18]=2)[CH:9]=1>CCOC(C)=O.[Pd]>[CH3:37][Si:34]([CH3:35])([CH3:36])[CH2:33][CH2:32][O:31][CH2:30][N:7]([CH2:6][O:5][CH2:4][CH2:3][Si:2]([CH3:1])([CH3:39])[CH3:38])[C:8]1[N:13]2[N:14]=[CH:15][CH:16]=[C:12]2[N:11]=[C:10]([CH:17]2[CH2:22][CH2:21][N:20]([C:23]([O:25][C:26]([CH3:29])([CH3:28])[CH3:27])=[O:24])[CH2:19][CH2:18]2)[CH:9]=1

Participants

Conditions

Temperature: 45 °C

Procedure

A mixture of tert-butyl 4-(7-(bis((2-(trimethylsilyl)ethoxy)methyl)amino)pyrazolo[1,5-a]pyrimidin-5-yl)-5,6-dihydropyridine-1(2H)-carboxylate (Int-9e, 5.05 g) and 10% Pd/C (300 mg) in EtOAc was stirred at 45° C. under hydrogen (balloon pressure) for three hours. After filtration and concentration, tert-butyl 4-(7-(bis((2-(trimethylsilyl)ethoxy)methyl)amino)pyrazolo[1,5-a]pyrimidin-5-yl)piperidine-1-carboxy late (Int-9f) (5.1 g) was obtained as an oil. LC/MS: m/z=578.3 (M+H+).

Workup

filtrationAfter filtration and concentration

Sources & evidence

ORD record: ord-0aa940016993440ca8c22a91896d2232
Source dataset: uspto-grants-2013_12
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US08609675B2

Reaction notes

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