Chloropyrazine → 5-(4-Chloro-phenyl)-1-phenyl-6-(4-pyrazin-2-yl-phenyl)-1,5-dihydro-pyrazolo(3,4-d)pyrimidin-4-one

HRID 1693566Notes

Reaction equation

[Cl:1][C:2]1[CH:7]=[CH:6][C:5]([N:8]2[C:13](=[O:14])[C:12]3[CH:15]=[N:16][N:17]([C:18]4[CH:23]=[CH:22][CH:21]=[CH:20][CH:19]=4)[C:11]=3[N:10]=[C:9]2[C:24]2[CH:29]=[CH:28][C:27](B3OC(C)(C)C(C)(C)O3)=[CH:26][CH:25]=2)=[CH:4][CH:3]=1.Cl[C:40]1[CH:45]=[N:44][CH:43]=[CH:42][N:41]=1>>[Cl:1][C:2]1[CH:3]=[CH:4][C:5]([N:8]2[C:13](=[O:14])[C:12]3[CH:15]=[N:16][N:17]([C:18]4[CH:23]=[CH:22][CH:21]=[CH:20][CH:19]=4)[C:11]=3[N:10]=[C:9]2[C:24]2[CH:25]=[CH:26][C:27]([C:40]3[CH:45]=[N:44][CH:43]=[CH:42][N:41]=3)=[CH:28][CH:29]=2)=[CH:6][CH:7]=1

Participants

Reactant 2

HCID 73277Chloropyrazine

HCID 578979725-(4-Chloro-phenyl)-1-phenyl-6-[4-(4,4,5,5-tetramethyl [1,3,2]dioxaborolan-2-yl)-phenyl]-1,5-dihydro-pyrazolo[3,4-d]pyrimidin-4-one

Product 1

HCID 578980845-(4-Chloro-phenyl)-1-phenyl-6-(4-pyrazin-2-yl-phenyl)-1,5-dihydro-pyrazolo(3,4-d)pyrimidin-4-one

Conditions

Temperature: 100 °C

Procedure

5-(4-Chloro-phenyl)-1-phenyl-6-(4-pyrazin-2-yl-phenyl)-1,5-dihydro-pyrazolo[3,4-d]pyrimidin-4-one is prepared from 5-(4-chloro-phenyl)-1-phenyl-6-[4-(4,4,5,5-tetramethyl [1,3,2]dioxaborolan-2-yl)-phenyl]-1,5-dihydro-pyrazolo[3,4-d]pyrimidin-4-one and 2-chloro-pyrazine by using the method described in example 338 except that the reaction mixture is stirred at 100° C. for 14 hours: 1H NMR (CDCl3) δ (ppm) 9.02(d, 1H), 8.67(t, 1H), 8.55(d, 1H), 8.35(s, 1H), 8.15 (d, 2H), 7.95(d, 2H), 7.51(m, 4H), 7.37 (t, 1H), 7.33(d, 2H), 7.14(d, 2H). HPLC-MS calculated C27H17ClN6O (M+1+): 477.1. Found: 477.1.

Sources & evidence

ORD record: ord-f33746124d264a579313b5a77a3c0e49
Source dataset: uspto-grants-2012_04
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US08158634B2

Reaction notes

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