1-(3-Methylbutyl)-1H-pyrazole-4-boronic acid → 1-(2-Chloro-3,6-difluorobenzyl)-7-[1-(3-methylbutyl)-1H-pyrazol-4-yl]-1,2,3,4-tetrahydropyrido[2,3-b]pyrazine

HRID 1819093Notes

Reaction equation

HRID 1819093 reaction equation
[Cl:1][C:2]1[C:19]([F:20])=[CH:18][CH:17]=[C:16]([F:21])[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.[CH3:22][CH:23]([CH3:34])[CH2:24][CH2:25][N:26]1[CH:30]=[C:29](B(O)O)[CH:28]=[N:27]1>>[Cl:1][C:2]1[C:19]([F:20])=[CH:18][CH:17]=[C:16]([F:21])[C:3]=1[CH2:4][N:5]1[CH2:10][CH2:9][NH:8][C:7]2[N:11]=[CH:12][C:13]([C:29]3[CH:28]=[N:27][N:26]([CH2:25][CH2:24][CH:23]([CH3:34])[CH3:22])[CH:30]=3)=[CH:14][C:6]1=2

Participants

3

Reactant 2

HCID 114239411-(3-Methylbutyl)-1H-pyrazole-4-boronic acidHCID 578858681-(2-Chloro-3,6-difluorobenzyl)-7-iodo-1,2,3,4-tetrahydropyrido[2,3-b]pyrazine

Product 1

HCID 578858971-(2-Chloro-3,6-difluorobenzyl)-7-[1-(3-methylbutyl)-1H-pyrazol-4-yl]-1,2,3,4-tetrahydropyrido[2,3-b]pyrazineYield 21%

Procedure

1-(2-Chloro-3,6-difluorobenzyl)-7-iodo-1,2,3,4-tetrahydropyrido[2,3-b]pyrazine (99 mg) was reacted with 1-(3-methylbutyl)-1H-pyrazole-4-boronic acid, pinacol ester as in General Procedure 4B to give the title compound as a brown solid (21% yield). M.p.=134° C., LCMS: m/z=431.92 (M+H+), 1H-NMR (CDCl3, 400 MHz) δ 0.96 (6H, d, J=6.6 Hz), 1.61 (1H, m), 1.80 (2H, m), 3.28 (2H, t, J=4.8 Hz), 3.51 (2H, m), 4.15 (2H, t, J=7.5 Hz), 4.50 (2H, s), 4.90 (1H, bs), 6.96 (1H, d, J=1.5 Hz), 7.02 (1H, m), 7.12 (1H, m), 7.51 (1H, s), 7.63 (2H, m).

Sources & evidence

ORD record
ord-4e29e164c77f4b3d9eca9675d0c6b204
Source dataset
uspto-grants-2009_10
Patent number
US07601716B2

Reaction notes

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