Triethylamine → 4-(4-chlorobenzyl)-6-methoxy-2-(3-(2-oxopyrrolidin-1-yl)phenyl)-1,2,4-triazine-3,5(2H,4H)-dione

HRID 1799485Notes

Reaction equation

[NH2:1][C:2]1[CH:3]=[C:4]([N:8]2[C:13](=[O:14])[N:12]([CH2:15][C:16]3[CH:21]=[CH:20][C:19]([Cl:22])=[CH:18][CH:17]=3)[C:11](=[O:23])[C:10]([O:24][CH3:25])=[N:9]2)[CH:5]=[CH:6][CH:7]=1.CCN(CC)CC.Br[CH2:34][CH2:35][CH2:36][C:37](Cl)=[O:38]>CN(C=O)C>[Cl:22][C:19]1[CH:20]=[CH:21][C:16]([CH2:15][N:12]2[C:11](=[O:23])[C:10]([O:24][CH3:25])=[N:9][N:8]([C:4]3[CH:5]=[CH:6][CH:7]=[C:2]([N:1]4[CH2:34][CH2:35][CH2:36][C:37]4=[O:38])[CH:3]=3)[C:13]2=[O:14])=[CH:17][CH:18]=1

Participants

Conditions

Temperature: 80 °C

Procedure

According to Scheme 9 Step 2: To a solution of 2-(3-aminophenyl)-4-(4-chlorobenzyl)-6-methoxy-1,2,4-triazine-3,5(2H,4H)-dione (100 mg, 0.27 mmol) (1 mL) and NEt3 (78 μL, 0.55 mmol) in DMF was added bromobutyryl chloride (36 μL, 0.30 mmol). The reaction mixture was heated at 80° C. for 4 hours then quenched with water and extracted with ethyl acetate. The organic layers were combined and successively washed with water, brine, dried over MgSO4, filtered and concentrated. The crude product was purified on a prepacked silica column (10 g) 8:2 cyclohexane/Ethyl acetate 80/20 to afford 4-(4-chlorobenzyl)-6-methoxy-2-(3-(2-oxopyrrolidin-1-yl)phenyl)-1,2,4-triazine-3,5(2H,4H)-dione 4.145 as a white solid (6 mg, 5%).

Workup

customthen quenched with water
extractionextracted with ethyl acetate
washsuccessively washed with water, brine
dry with materialdried over MgSO4
filtrationfiltered
concentrationconcentrated
customThe crude product was purified on a prepacked silica column (10 g) 8:2 cyclohexane/Ethyl acetate 80/20

Sources & evidence

ORD record: ord-68926128446d4106bdb2338dd298aeb1
Source dataset: uspto-grants-2013_01
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US08344138B2

Reaction notes

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