Triethylamine → HCID 24963671, compound

HRID 1409651Notes

Reaction equation

HRID 1409651 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(N(CC)CC)C.[CH3:31][C:32]1[CH:33]=[C:34]([N:39]=[C:40]=[O:41])[CH:35]=[CH:36][C:37]=1[CH3:38]>C1COCC1>[CH3:31][C:32]1[CH:33]=[C:34]([NH:39][C:40]([NH:2][CH2:3][C:4]2[CH:13]=[CH:12][CH:11]=[C:10]3[C:5]=2[C:6](=[O:23])[N:7]([CH:15]2[CH2:20][CH2:19][C:18](=[O:21])[NH:17][C:16]2=[O:22])[C:8]([CH3:14])=[N:9]3)=[O:41])[CH:35]=[CH:36][C:37]=1[CH3:38]

Participants

5

Reactant 3

HCID 8471TriethylamineHCID 43896633,4-Dimethylphenyl isocyanateHCID 249683051015474-47-1

Product 1

HCID 24963671HCID 24963671, compoundYield 73%

Reagents, catalysts & solvents 1

HCID 8028TetrahydrofuranSolvent

Procedure

To a stirred suspension of 3-(5-aminomethyl-2-methyl-4-oxo-4H-quinazolin-3-yl)-piperidine-2,6-dione hydrogen chloride (0.53 g, 1.6 mmol) and triethylamine (0.31 mL, 2.2 mmol) in THF (15 mL) at 5˜10° C., was added 3,4-dimethyl phenyl isocyanate (0.29 mL, 2.1 mmol). Then the mixture was stirred at room temperature overnight. The mixture was quenched with methanol (˜1 mL), and the solvent was evaporated. The residue was purified by flash column chromatography (Silica gel, methanol/methylene chloride 4%/96%) to give 1-(3,4-dimethyl-phenyl)-3-[3-(2,6-dioxo-piperidin-3-yl)-2-methyl-4-oxo-3,4-dihydro-quinazolin-5-ylmethyl]-urea as an off-white solid (520 mg, 73% yield); HPLC, Waters Symmetry C18, 5 μm, 3.9×150 mm, 1 mL/min, 240 nm, 10/90 CH3CN/0.1% H3PO4, grad. to 95/5 in 5 min, kept 5 min, 6.14 min (96.6%); mp, 241-243° C.; 1HNMR (DMSO-d6)2.11-2.21 (m, 7H, CHH, 2ArCH3), 2.59-2.94 (m, 6H, CHCH2, CH3), 4.71 (d, J=5 Hz, 2H, CH2NH), 5.27 (dd, J=6, 11 Hz, 1H, CH), 6.56 (t, J=5 Hz, 1H, CH2NH), 6.92-7.78 (m, 6H, Ar), 8.58 (s, 1H, NH), 11.05 (s, 1H, NH); 13C NMR (DMSO-d6) δ 18.58, 19.59, 20.70, 23.24, 30.62, 42.26, 56.52, 115.18, 117.76, 118.99, 125.54, 126.28, 128.50, 129.46, 134.01, 136.03, 138.15, 141.69, 148.27, 154.87, 155.11, 160.94, 169.47, 172.65. LCMS MH=448; Anal Calcd For C24H25N5O4+2.0H2O: C, 59.62; H, 6.05; N, 14.48. Found: C, 59.36; H, 5.95; N, 14.24.

Workup

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

Sources & evidence

ORD record
ord-e34a3d26a88a418e8280f3563a5a8e7b
Source dataset
uspto-grants-2014_12
Patent number
US08921385B2

Reaction notes

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