2-Chlorobenzaldehyde → HCID 135907942, compound

HRID 336770Notes

Reaction equation

[Cl:1][C:2]1[CH:9]=[CH:8][CH:7]=[CH:6][C:3]=1[CH:4]=O.[NH2:10][C:11]1[CH:19]=[C:18]([O:20][CH3:21])[CH:17]=[C:16]([O:22][CH3:23])[C:12]=1[C:13]([NH2:15])=[O:14].OS([O-])=O.[Na+].CC1C=CC(S(O)(=O)=O)=CC=1.O>CC(N(C)C)=O>[Cl:1][C:2]1[CH:9]=[CH:8][CH:7]=[CH:6][C:3]=1[C:4]1[NH:15][C:13](=[O:14])[C:12]2[C:11](=[CH:19][C:18]([O:20][CH3:21])=[CH:17][C:16]=2[O:22][CH3:23])[N:10]=1

Participants

Conditions

Temperature: 140 °C

Procedure

A mixture of 2-chlorobenzaldehyde (0.0430 g, 306 mmol), 2-amino-4,6-dimethoxybenzamide (0.0600 g, 0.306 mmol), NaHSO3 (94%, 0.0474 g, 0.428 mmol), and p-TsOH.H2O (0.0175 g, 0.0918 mmol) in DMA (3.06 mL) was heated at 140° C. for 16 h. The mixture was cooled and chromatographed on silica gel, fractions containing the product were combined, concentrated under vacuum, diluted with EtOAc (300 mL), washed with water (3×75 mL), brine (75 mL), dried over sodium sulfate, filtered and concentrated under vacuum to provide 2-(2-chlorophenyl)-5,7-dimethoxyquinazolin-4(3H)-one (0.0377 g, 39%) as a yellow solid. Selected data: 1H NMR (300 MHz, DMSO-d6) δ 12.14 (s, 1H), 7.65-7.40 (m, 4H), 6.72 (d, J=2.29 Hz, 1H), 6.59 (d, J=2.30 Hz, 1H), 3.87 (s, 3H), 3.85 (s, 3H); MS (APCI) m/z 317 [M+H]+.

Workup

temperatureThe mixture was cooled
customchromatographed on silica gel, fractions
additioncontaining the product
concentrationconcentrated under vacuum
additiondiluted with EtOAc (300 mL)
washwashed with water (3×75 mL), brine (75 mL)
dry with materialdried over sodium sulfate
filtrationfiltered
concentrationconcentrated under vacuum

Sources & evidence

ORD record: ord-260f82bdc6ee40bf89f4db917cc790ac
Source dataset: uspto-grants-2014_11
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US08889698B2

Reaction notes

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