Phosphorus oxychloride → N-cyclobutyl-4-methyl-3-[6-(4-methylpiperazin-1-yl)-4-oxoquinazolin-3(4H)-yl]benzamide

HRID 2354165Notes

Reaction equation

HRID 2354165 reaction equation
P(Cl)(Cl)(Cl)=O.[CH3:6][C:7]1[CH:15]=[CH:14][C:10]([C:11]([OH:13])=O)=[CH:9][C:8]=1[N:16]1[C:25](=[O:26])[C:24]2[C:19](=[CH:20][CH:21]=[C:22]([N:27]3[CH2:32][CH2:31][N:30]([CH3:33])[CH2:29][CH2:28]3)[CH:23]=2)[N:18]=[CH:17]1.[CH:34]1([NH2:38])[CH2:37][CH2:36][CH2:35]1>N1C=CC=CC=1>[CH:34]1([NH:38][C:11](=[O:13])[C:10]2[CH:14]=[CH:15][C:7]([CH3:6])=[C:8]([N:16]3[C:25](=[O:26])[C:24]4[C:19](=[CH:20][CH:21]=[C:22]([N:27]5[CH2:32][CH2:31][N:30]([CH3:33])[CH2:29][CH2:28]5)[CH:23]=4)[N:18]=[CH:17]3)[CH:9]=2)[CH2:37][CH2:36][CH2:35]1

Participants

5

Reactant 3

HCID 24813Phosphorus oxychlorideHCID 75645CyclobutylamineHCID 669188194-methyl-3-[6-(4-methylpiperazin-1-yl)-4-oxoquinazolin-3(4H)-yl]benzoic acid

Product 1

HCID 11224214N-cyclobutyl-4-methyl-3-[6-(4-methylpiperazin-1-yl)-4-oxoquinazolin-3(4H)-yl]benzamide

Reagents, catalysts & solvents 1

HCID 1049PyridineSolvent

Conditions

Temperature
120 °C

Procedure

Phosphorus oxychloride (0.08 ml) was added to a mixture of 4-methyl-3-[6-(4-methylpiperazin-1-yl)-4-oxoquinazolin-3(4H)-yl]benzoic acid (0.30 g), cyclobutylamine (0.09 ml) and pyridine (5 ml) and the resultant was heated to 120° C. for 5 minutes in a microwave (Personal Chemistry Emrys Optimizer with 300 W magnetron). The mixture was evaporated. The residue was partitioned between ethyl acetate and saturated NaHCO3 solution. The organic phase was dried (magnesium sulphate) and evaporated and the residue purified by column chromatography on a silica column using initially methylene chloride and then a 9:1 mixture of methylene chloride and methanol as eluent. There was thus obtained the title compound (0.16 g); NMR Spectrum: (DMSOd6) 1.68 (m, 2H), 2.05 (m, 2H), 2.14 (s, 3H), 2.20 (m, 2H), 2.24 (s, 3H), 2.48 (m, 4H), 3.29 (m, 4H), 4.42 (m, 1H), 7.49 (d, 1H), 7.53 (d, 1H), 7.65 (m, 2H), 7.87 (d, 1H), 7.92 (m, 1H), 8.10 (s, 1H), 8.60 (d, 1H); Mass Spectrum: M+H+ 432.

Workup

  1. customThe mixture was evaporated
  2. customThe residue was partitioned between ethyl acetate and saturated NaHCO3 solution
  3. dry with materialThe organic phase was dried (magnesium sulphate)
  4. customevaporated
  5. customthe residue purified by column chromatography on a silica column
  6. additiona 9:1 mixture of methylene chloride and methanol as eluent

Sources & evidence

ORD record
ord-e0f6d652b5f146a0b079ef603153bb40
Source dataset
uspto-grants-2010_07
Patent number
US07750154B2

Reaction notes

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