Lithium hydroxide, monohydrate → HCID 66563688, compound

HRID 40820Notes

Reaction equation

[NH2:1][C:2]1[N:7]=[C:6]([NH2:8])[C:5]([OH:9])=[C:4]([CH2:10][CH3:11])[N:3]=1.O.[OH-].[Li+].Br[CH2:16][CH2:17][CH2:18][O:19][C:20]1[CH:25]=[CH:24][CH:23]=[CH:22][C:21]=1[CH2:26][CH2:27][C:28]([O:30]C)=[O:29]>CN(C=O)C.O>[NH2:1][C:2]1[N:7]=[C:6]([NH2:8])[C:5]([O:9][CH2:16][CH2:17][CH2:18][O:19][C:20]2[CH:25]=[CH:24][CH:23]=[CH:22][C:21]=2[CH2:26][CH2:27][C:28]([OH:30])=[O:29])=[C:4]([CH2:10][CH3:11])[N:3]=1

Participants

Conditions

Temperature: 25 °C

Procedure

2,4-Diamino-6-ethyl-5-hydroxypyrimidine (0.4625 g, 3 mmol) was added to a stirred solution of lithium hydroxide monohydrate (0.4406 g, 10.5 mmol) in DMF (4 mL) and the reaction mixture was stirred at 25° C. for 1 hour. A solution of methyl 3-(2-(3-bromopropoxy)phenyl)propanoate (0.9035 g, 3 mmol) in DMF (1 mL) was added and the reaction mixture was left stirring at 25° C. overnight. DMF was partially removed under reduced pressure to give residue. The residue was diluted with water followed by extraction with dichloromethane. The aqueous layer was neutralized with dil. HCl to give white solid. Recrystallization from acetone afforded the desired diaminopyrimidine as white solid (0.6271 g, 58%, m.p. 155.5-157.5° C.). 1H NMR (400 MHz, DMSO-d6): 1.04 (3H, t, J=7.6 Hz), 2.19 (2H, m), 2.39 (2H, q, J=7.5 Hz), 2.46 (2H, t, J=7.5 Hz), 2.78 (2H, t, J=7.7 Hz), 3.83 (2H, t, J=6.1 Hz), 4.15 (2H, t, J=5.9 Hz), 6.29 (2H, bs), 6.85 (1H, t, J=7.4 Hz), 6.96 (2H, bs), 6.98 (1H, d, J=8.1 Hz), 7.14-7.19 (2H, m).

Workup

waitthe reaction mixture was left
stirringstirring at 25° C. overnight
customDMF was partially removed under reduced pressure
customto give residue
extractionfollowed by extraction with dichloromethane
customto give white solid
customRecrystallization from acetone

Sources & evidence

ORD record: ord-ceb3bc6669ea4b32b8b5e9c0a12411e5
Source dataset: uspto-grants-2013_09
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US08530491B2

Reaction notes

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