Reaction Steps
To a solution of 3-(chloromethyl)-4-methoxybenzaldehyde (85 mg, 0.46 mmol, 1.0 equiv) and 2,6-dimethylphenol (62 mg, 0.51 mmol, 1.1 equiv) in 3.0 mL of anhydrous acetonitrile, we added K2CO3 (320 mg, 2.3 mmol, 5.0 eq). The mixture was heated in a microwave reactor for 30 min at 150° C. After filtering off the solid and removing the solvent, 2-amino-N-(furan-2-ylmethyl)benzamide (110 mg, 0.51 umol, 1.1 equiv) in 5 mL of EtOH was added followed by addition of Ytterbium trifluoromethanesulfonate (57 mg, 0.02 umol, 0.2 equiv). The mixture was heated at 80° C. for 2 hours. The product was isolated via preparative HPLC purification and solvent was removed via reduced pressure lyophilization to give 2434(2,6-dimethylphenoxy)methyl)-4-methoxyphenyl)-3-(furan-2-ylmethyl)-2,3-dihydroquinazolin-4(1H)-one (64.5 mg, 30%) as a white solid after triturating with diethyl ether. 1HNMR (400 MHz, DMSO-d6) δ ppm 2.16 (s, 6H), 3.77 (s, 3 H), 3.86 (d, J=15.6 Hz, 1 H), 4.69 (d, J=1.9 Hz, 2 H), 5.19 (d, J=15.4 Hz, 1 H), 5.75 (d, J=2.3, Hz, 1 H), 6.30 (d, J=3.2 Hz, 1 H), 6.39 (dd, J=3.2, 1.9 Hz, 1 H), 6.62-6.70 (m, 2 H), 6.86-6.97 (m, 1 H), 6.99-7.04 (m, 3 H), 7.19-7.29 (m, 2 H), 7.32 (d, J=2.3 Hz, 1 H), 7.49 (d, J=2.4, Hz, 1 H), 7.57 (dd, J=1.8, 0.7 Hz, 1 H), 7.68 (dd, J=7.9, 1.5 Hz, 1 H); HPLC: tR=6.88 min, UV254=97%; HRMS (ESI): m/z calculated for C29H28N2O4 [M+1]+469.2132, found 469.2138.
