2-Methoxypyrimidine-5-boronic acid → 1-(2,5-Dichlorobenzyl)-7-(2-methoxypyrimidin-5-yl)-1,2,3,4-tetrahydropyrido[2,3-b]pyrazine

HRID 659398Notes

Reaction equation

HRID 659398 reaction equation
[Cl:1][C:2]1[CH:19]=[CH:18][C:17]([Cl:20])=[CH:16][C:3]=1[CH2:4][N:5]1[CH2:10][CH2:9][NH:8][C:7]2[N:11]=[CH:12][C:13](I)=[CH:14][C:6]1=2.[CH3:21][O:22][C:23]1[N:28]=[CH:27][C:26](B(O)O)=[CH:25][N:24]=1>>[Cl:1][C:2]1[CH:19]=[CH:18][C:17]([Cl:20])=[CH:16][C:3]=1[CH2:4][N:5]1[CH2:10][CH2:9][NH:8][C:7]2[N:11]=[CH:12][C:13]([C:26]3[CH:25]=[N:24][C:23]([O:22][CH3:21])=[N:28][CH:27]=3)=[CH:14][C:6]1=2

Participants

3

Reactant 2

HCID 27367782-Methoxypyrimidine-5-boronic acidHCID 578860791-(2,5-Dichlorobenzyl)-7-iodo-3,4-dihydro-1H-pyrido[2,3-b]pyrazine

Product 1

HCID 578857971-(2,5-Dichlorobenzyl)-7-(2-methoxypyrimidin-5-yl)-1,2,3,4-tetrahydropyrido[2,3-b]pyrazineYield 42%

Procedure

1-(2,5-dichlorobenzyl)-7-iodo-1,2,3,4-tetrahydropyrido[2,3-b]pyrazine (500 mg) was reacted with 2-methoxypyrimidine-5-boronic acid as in General Procedure 4A to give the title compound as a pale orange foam in 42% yield. M.p. (foam), LCMS: m/z=404.36 (M+H+), 1H-NMR (CDCl3, 400 MHz) δ 3.51 (t, J=5.3 Hz, 2H), 3.66-3.70 (m, 2H), 4.01 (s, 3H), 4.49 (s, 2H), 4.99 (bs, 1H), 6.46 (d, J=1.5 Hz, 1H), 7.18-7.26 (m, 2H), 7.35 (d, J=8.3 Hz, 1H), 7.62 (d, J=2.0 Hz, 1H), 8.50 (s, 1H).

Sources & evidence

ORD record
ord-406ef34d17c84c1ab7ef73f1ab2de83e
Source dataset
uspto-grants-2011_12
Patent number
US08080561B2

Reaction notes

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