Ethyl 6'-bromo-1'-(1,1-dimethylethylsulfinamido)-4-methoxy-1',3'-dihydrospiro[cyclohexane-1,2'-indene]-1'-carboxylate → Ethyl 1'-amino-6'-bromo-4-methoxy-1',3'-dihydrospiro[cyclohexane-1,2'-indene]-1'-carboxylate

Participants

Reaction Conditions

Reaction Steps

To a solution of compound 6 (40 mg, 0.11 mmol) in DCM (3 mL) was added TiCl4 (0.22 mL, 0.22 mmol) and the mixture was stirred in microwave at 50° C. for 10 min. After the reaction, bis-trimehtlysilylcarbodiimide (62 mg, 0.33 mmol) was added and the mixture was stirred in microwave at 60° C. for 10 min. The reaction was quenched with ice water and extracted with CH2Cl2, the organic layer was washed with water, brine, dried and concentrated to give the product 7 (20 mg, 57%).

Provenance & Evidence