Sodium hydride → 3-(4-phenoxyphenyl)-1-(tetrahydropyran-4-yl)-1H-pyrazolo[3,4-d]pyrimidin-4-ylamine

HRID 432159Notes

Reaction equation

[O:1]([C:8]1[CH:13]=[CH:12][C:11]([C:14]2[C:22]3[C:17](=[N:18][CH:19]=[N:20][C:21]=3[NH2:23])[NH:16][N:15]=2)=[CH:10][CH:9]=1)[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1.[H-].[Na+].S(C1C=CC(C)=CC=1)(O[CH:30]1[CH2:35][CH2:34][O:33][CH2:32][CH2:31]1)(=O)=O>CC(N(C)C)=O>[O:1]([C:8]1[CH:13]=[CH:12][C:11]([C:14]2[C:22]3[C:17](=[N:18][CH:19]=[N:20][C:21]=3[NH2:23])[N:16]([CH:30]3[CH2:35][CH2:34][O:33][CH2:32][CH2:31]3)[N:15]=2)=[CH:10][CH:9]=1)[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1

Participants

Conditions

Temperature: 105 °C

Procedure

3-(4-phenoxyphenyl)-1H-pyrazolo[3,4-d]pyrimidin-4-ylamine (Compound 15) (0.97 g) in 33 mL dry dimethylacetamide was stirred under nitrogen while adding 60% sodium hydride (0.22 g). After 30 minutes tetrahydropyran-4-yl tosylate (1.0 g) was added and the mixture heated at 105° C. for 4 hours then 135° C. for 3.5 hours. Evaporation in vacuo and treating with water gave pale brown solid which was collected and washed well with water then dried in air. Flash chromatography in 19:1 ethyl acetate:triethylamine afforded 0.22 g (18%) of 3-(4-phenoxyphenyl)-1-(tetrahydropyran-4-yl)-1H-pyrazolo[3,4-d]pyrimidin-4-ylamine m.p. 187-187.5° C. Calculated for C22H21N5O2 C 68.2H 5.4 N 18.1 Found C 68.1H 5.5 N 18.0.

Workup

customEvaporation in vacuo
additiontreating with water
customgave pale brown solid which
customwas collected
washwashed well with water
customthen dried in air

Sources & evidence

ORD record: ord-e01c64f90d554cc7bb2e0fc7eccf9072
Source dataset: uspto-grants-2003_12
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US06660744B1

Reaction notes

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