2,5-Dichlorobenzyl bromide → 6-[3-(R)-Aminopiperidin-1-yl]-1-(2,5-dichlorobenzyl)-3-methyl-1H-pyrimidine-2,4-dione

HRID 602372Notes

Reaction equation

HRID 602372 reaction equation
[NH2:1][C@@H:2]1[CH2:7][CH2:6][CH2:5][N:4]([C:8]2[N:13](CC3C=C(F)C=CC=3Br)[C:12](=[O:23])[N:11]([CH3:24])[C:10](=[O:25])[CH:9]=2)[CH2:3]1.[Cl:26][C:27]1[CH:34]=[CH:33][C:32]([Cl:35])=[CH:31][C:28]=1[CH2:29]Br>>[NH2:1][C@@H:2]1[CH2:7][CH2:6][CH2:5][N:4]([C:8]2[N:13]([CH2:29][C:28]3[CH:31]=[C:32]([Cl:35])[CH:33]=[CH:34][C:27]=3[Cl:26])[C:12](=[O:23])[N:11]([CH3:24])[C:10](=[O:25])[CH:9]=2)[CH2:3]1

Participants

3

Reactant 2

HCID 34957442,5-Dichlorobenzyl bromideHCID 11464036Trelagliptin Impurity 47

Product 1

HCID 112228076-[3-(R)-Aminopiperidin-1-yl]-1-(2,5-dichlorobenzyl)-3-methyl-1H-pyrimidine-2,4-dione

Procedure

The title compound was prepared from compound 1 using the same procedures as in the preparation of compound 10, except that 2,5-di-chloro-benzyl bromide was used in the place of 2-bromo-5-fluoro-benzyl bromide. 1H-NMR (400 MHz, CDCl3-CD3OD 10:1): δ ppm 7.50 (d, J=8.6 Hz, 1H), 7.39 (dd, J=8.3, 2.526 Hz, 1H), 7.22 (d, J=2.5 Hz, 1H), 5.41 (s, 1H), 5.01-4.93 (ABq, J=41.9, 16.2 Hz, 2H), 3.25 (m, 2H), 3.10 (s, 3H), 2.85 (m, 1H), 2.76 (m, 1H), 2.67 (m, 1H), 1.91 (m, 1H), 1.75 (m, 1H), 1.45 (m, 2H). MS (ES) [m+H] calc'd for C17H21Cl2N4O2, 383.1; found 383.1.

Sources & evidence

ORD record
ord-a539d1b528554a2eac8255bf00028148
Source dataset
uspto-grants-2011_03
Patent number
US07906523B2

Reaction notes

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