Acetyl chloride → HCID 24968307, compound

HRID 1409634Notes

Reaction equation

HRID 1409634 reaction equation
Cl.[NH2:2][CH2:3][C:4]1[CH:13]=[CH:12][CH:11]=[C:10]2[C:5]=1[C:6](=[O:23])[N:7]([CH:15]1[CH2:20][CH2:19][C:18](=[O:21])[NH:17][C:16]1=[O:22])[C:8]([CH3:14])=[N:9]2.[C:24](Cl)(=[O:26])[CH3:25].C(N(CC)C(C)C)(C)C>C(#N)C>[O:22]=[C:16]1[CH:15]([N:7]2[C:6](=[O:23])[C:5]3[C:10](=[CH:11][CH:12]=[CH:13][C:4]=3[CH2:3][NH:2][C:24](=[O:26])[CH3:25])[N:9]=[C:8]2[CH3:14])[CH2:20][CH2:19][C:18](=[O:21])[NH:17]1

Participants

5

Reactant 3

HCID 6367Acetyl chlorideHCID 81531DiisopropylethylamineHCID 249683051015474-47-1

Product 1

HCID 24968307HCID 24968307, compoundYield 16.9%

Reagents, catalysts & solvents 1

HCID 6342AcetonitrileSolvent

Procedure

To a stirred mixture of 3-(5-aminomethyl-2-methyl-4-oxo-4H-quinazolin-3-yl)-piperidine-2,6-dione hydrogen chloride (0.65 g, 1.9 mmol) in acetonitrile (10 mL), was added acetyl chloride (0.13 mL, 1.8 mmol) and N,N-diisopropyl ethylamine (0.70 mL, 4.3 mmol). The mixture was stirred at room temp for 15 minutes. The solvent was evaporated, and the residue was purified by flash column chromatography (Silica gel, methanol/methylene chloride 4%/96%) to give N-[3-(2,6-dioxo-piperidin-3-yl)-2-methyl-4-oxo-3,4-dihydro-quinazolin-5-ylmethyl]-acetamide as a light yellow solid (104 mg, 16% yield); HPLC, Waters Symmetry C18, 5 μm, 3.9×150 mm, 1 mL/min, 240 nm, 10/90 CH3CN/0.1% H3PO4, gradient to 95/5 in 5 min, kept for 5 min, 3.93 min (99.0%); mp, 293-291° C.; 1HNMR (DMSO-d6)1.92 (s, 3H, CH3), 2.14-2.20 (m, 1H, CHH), 2.57-2.86 (m, 6H, CHCH2, CH3), 4.73-4.77 (m, 2H, CH2NH), 5.23 (dd, J=6, 11 Hz, 1H, CH), 7.31-7.76 (m, 3H, Ar), 8.22 (t, J=6 Hz, 1H, CH2NH); 13C NMR (DMSO-d6) δ 20.78, 22.60, 23.26, 30.58, 41.49, 56.48, 117.65, 124.48, 125.42, 133.83, 141.06, 148.44, 154.75, 160.95, 169.32, 169.51, 172.58. LCMS MH=343; Anal Calcd For C17H18N4O4: C, 59.64; H, 5.30; N, 16.37. Found: C, 59.46; H, 5.05; N, 16.24.

Workup

  1. customThe solvent was evaporated
  2. customthe residue was purified by flash column chromatography (Silica gel, methanol/methylene chloride 4%/96%)

Sources & evidence

ORD record
ord-cfda390311544098b56e3d3fbd8375be
Source dataset
uspto-grants-2014_12
Patent number
US08921385B2

Reaction notes

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