Benzylamine → {4-[3-(2-benzylamino-pyrimidin-4-yl)-1H-pyrazolo[3,4-d]pyrimidin-6-ylamino]-cyclohexyl}-carbamic acid tert-butyl ester

HRID 1809749Notes

Reaction equation

HRID 1809749 reaction equation
[C:1]([O:5][C:6](=[O:33])[NH:7][CH:8]1[CH2:13][CH2:12][CH:11]([NH:14][C:15]2[N:20]=[C:19]3[NH:21][N:22]=[C:23]([C:24]4[CH:29]=[CH:28][N:27]=[C:26](S(C)=O)[N:25]=4)[C:18]3=[CH:17][N:16]=2)[CH2:10][CH2:9]1)([CH3:4])([CH3:3])[CH3:2].[CH2:34]([NH2:41])[C:35]1[CH:40]=[CH:39][CH:38]=[CH:37][CH:36]=1>>[C:1]([O:5][C:6](=[O:33])[NH:7][CH:8]1[CH2:13][CH2:12][CH:11]([NH:14][C:15]2[N:20]=[C:19]3[NH:21][N:22]=[C:23]([C:24]4[CH:29]=[CH:28][N:27]=[C:26]([NH:41][CH2:34][C:35]5[CH:40]=[CH:39][CH:38]=[CH:37][CH:36]=5)[N:25]=4)[C:18]3=[CH:17][N:16]=2)[CH2:10][CH2:9]1)([CH3:4])([CH3:3])[CH3:2]

Participants

3

Reactant 2

HCID 7504BenzylamineHCID 178504618HCID 178504618, compound

Product 1

HCID 178452777{4-[3-(2-benzylamino-pyrimidin-4-yl)-1H-pyrazolo[3,4-d]pyrimidin-6-ylamino]-cyclohexyl}-carbamic acid tert-butyl ester

Conditions

Temperature
130 °C

Procedure

The mixture of {4-[3-(2-methanesulfinyl-pyrimidin-4-yl)-1H-pyrazolo[3,4-d]pyrimidin-6-ylamino]-cyclohexyl}-carbamic acid tert-butyl ester (from Example 9 supra) (150 mg, 0.32 mmol) and benzylamine (138 mg, 1.3 mmol) was heated at 130° C., with stirring for 2 hours. The residue was purified by chromatography (silica gel, 6 g, 200-300 mesh, eluting with dichloromethane:methanol, 50:1 to 30:1) and then further purified by prep-HPLC to afford {4-[3-(2-benzylamino-pyrimidin-4-yl)-1H-pyrazolo[3,4-d]pyrimidin-6-ylamino]-cyclohexyl}-carbamic acid tert-butyl ester. (Yield 30 mg, 18.4%).

Workup

  1. customThe residue was purified by chromatography (silica gel, 6 g, 200-300 mesh, eluting with dichloromethane:methanol, 50:1 to 30:1)
  2. customfurther purified by prep-HPLC

Sources & evidence

ORD record
ord-db97f40ca7014f02883e446dccb95eb1
Source dataset
uspto-grants-2013_01
Patent number
US08362023B2

Reaction notes

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