2-Cyanopyridine-5-boronic acid pinacol ester → 5-[1-(2,5-Difluorobenzyl)-1,2,3,4-tetrahydropyrido[2,3-b]pyrazin-7-yl]-pyridine-2-carbonitrile

HRID 659357Notes

Reaction equation

HRID 659357 reaction equation
[F:1][C:2]1[CH:19]=[CH:18][C:17]([F: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.CC1(C)C(C)(C)OB([C:29]2[CH:30]=[CH:31][C:32]([C:35]#[N:36])=[N:33][CH:34]=2)O1>>[F:1][C:2]1[CH:19]=[CH:18][C:17]([F: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:29]3[CH:30]=[CH:31][C:32]([C:35]#[N:36])=[N:33][CH:34]=3)=[CH:14][C:6]1=2

Participants

3

Reactant 2

HCID 164141882-Cyanopyridine-5-boronic acid pinacol esterHCID 578860131-(2,5-Difluorobenzyl)-7-iodo-1,2,3,4-tetrahydropyrido[2,3-b]pyrazine

Product 1

HCID 248533315-[1-(2,5-Difluorobenzyl)-1,2,3,4-tetrahydropyrido[2,3-b]pyrazin-7-yl]-pyridine-2-carbonitrileYield 24%

Procedure

1-(2,5-Difluorobenzyl)-7-iodo-1,2,3,4-tetrahydropyrido[2,3-b]pyrazine (1.0 g) was reacted with 5-(4,4,5,5-Tetramethyl-[1,3,2]dioxaborolan-2-yl)pyridine-2-carbonitrile as in General Procedure 4A to give the title compound as a bright yellow solid (24% yield). M.p. 200° C. (dec), LCMS: m/z=364.53 (M+H+), 1H-NMR (CDCl3, 400 MHz) δ 3.46-3.52 (m, 2H), 3.62-3.72 (m, 2H), 4.50 (s, 2H), 5.12 (s, 1H), 6.70 (s, 1H), 6.92-7.00 (m, 2H), 7.03-7.12 (m, 1H), 7.62-7.69 (m, 2H), 7.67 (s, J=3.0 Hz, 1H), 7.75 (m, 1H), 8.73 (d, J=1.5 Hz, 1H).

Sources & evidence

ORD record
ord-40335fc1f8f4456cb8127d693dff6200
Source dataset
uspto-grants-2011_12
Patent number
US08080561B2

Reaction notes

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