Chlorotrimethylsilane → Ethyl [2,7-dimethyl-4-(p-tolyl)-5,6,7,8-tetrahydro-9-thia-1,7-diaza-fluoren-3-yl]pentanoate

Participants

Reaction Conditions

Reaction Steps

To a solution of (2-amino-6-methyl-4,5,6,7-tetrahydrothieno[2,3-c]pyridin-3-yl)(p-tolyl)methanone (0.286 g; 1 mmol) and ethyl 4-oxo-2-propylpentanoate (0.204 g; 1.1 mmol) in dry DMF (8 mL) under nitrogen atmosphere was added chlorotrimethylsilane (0.511 mL; 4 mmol) dropwise. The mixture was stirred in a sealed tube and heated at 100° C. for 24 h. An extra volume of chlorotrimethylsilane was added (0.100 mL) and the reaction mixture was stirred at 100° C. for 48 h. The volatiles were removed under reduced pressure and the residue was purified by flash-chromatography on silica gel using a gradient of methanol (1-20%) in dichloromethane to furnish the title compound as a dark oil.

Provenance & Evidence