Acetic Anhydride → HCID 59851270, compound

Participants

Reaction Conditions

Reaction Steps

To a solution of 2-(3,4-dimethoxy-phenylamino)-9-iodo-5H,7H-benzo[b]pyrimido[4,5-d]azepin-6-one (I-30) (0.60 g, 1.20 mmol) in dry DMF (8 mL) was added Ac2O (0.23 mL, 2.44 mmol), HCOOLi (0.19 g, 3.66 mmol), LiCl (0.155 g, 3.66 mmol), and Pd(OAc)2 (0.01 g, 0.06 mmol). Lastly, i-Pr2NEt (0.42 mL, 2.44 mmol) was added and the mixture heated for 16 h at 80° C. in a sealed tube. The reaction mixture was then diluted with CH2Cl2 (30 mL), and the organic layer was washed with H2O (3×30 mL), dried over MgSO4, filtered and concentrated in vacuo to give crude product as a yellow solid. The solid was treated with EtOAc and sonicated to provide a white solid which was collected by filtration to provide I-53 (0.33 g, 71%): HRMS Calcd. for C21H18N4O5: 407.1355, Found 407.1364.

Provenance & Evidence