3-Methyl-2-ketopiperazine → 2-[1-(2-Fluorobenzyl)-1H-pyrazolo[3,4-b]pyridin-3-yl]-5,5-dimethyl-4-(2-methyl-3-oxopiperazin-1-yl)-5,7-dihydro-6H-pyrrolo[2,3-d]pyrimidin-6-one

HRID 536524Notes

Reaction equation

[F:1][C:2]1[CH:30]=[CH:29][CH:28]=[CH:27][C:3]=1[CH2:4][N:5]1[C:9]2=[N:10][CH:11]=[CH:12][CH:13]=[C:8]2[C:7]([C:14]2[N:15]=[C:16](I)[C:17]3[C:22]([CH3:24])([CH3:23])[C:21](=[O:25])[NH:20][C:18]=3[N:19]=2)=[N:6]1.[CH3:31][CH:32]1[NH:37][CH2:36][CH2:35][NH:34][C:33]1=[O:38]>CN1CCCC1=O>[F:1][C:2]1[CH:30]=[CH:29][CH:28]=[CH:27][C:3]=1[CH2:4][N:5]1[C:9]2=[N:10][CH:11]=[CH:12][CH:13]=[C:8]2[C:7]([C:14]2[N:15]=[C:16]([N:37]3[CH2:36][CH2:35][NH:34][C:33](=[O:38])[CH:32]3[CH3:31])[C:17]3[C:22]([CH3:24])([CH3:23])[C:21](=[O:25])[NH:20][C:18]=3[N:19]=2)=[N:6]1

Participants

Conditions

Temperature: 220 °C

Procedure

Under argon atmosphere, 200 mg (purity 62%, 0.24 mmol) of 2-[1-(2-fluorobenzyl)-1H-pyrazolo[3,4-b]pyridin-3-yl]-4-iodo-5,5-dimethyl-5,7-dihydro-6H-pyrrolo[2,3-d]pyrimidin-6-one (example 15A) was suspended in 4 ml of absolute 1-methyl-2-pyrrolidone and 550 mg (4.82 mmol) of 3-methylpiperazin-2-one was added. The mixture was heated in the microwave for 3 h at 150° C. and for 3 h at 220° C. After cooling, the reaction mixture was purified by preparative HPLC (eluent: acetonitrile/water, gradient 20:80→100:0). 61 mg (purity 100%, 50% of theor.) of the target compound was obtained.

Workup

temperatureAfter cooling
customthe reaction mixture was purified by preparative HPLC (eluent: acetonitrile/water, gradient 20:80→100:0)
custom61 mg (purity 100%, 50% of theor.) of the target compound was obtained

Sources & evidence

ORD record: ord-454e78cce4e54d189fefe75b12ec3271
Source dataset: uspto-grants-2014_10
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US08859569B2

Reaction notes

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