Bis(trimethylsilyl)carbodiimide → HCID 178511864, compound

Participants

Reaction Steps

To a solution of 8-chlorodibenzo[b,f]oxepin-10(11H)-one (732 mg, 3.84. mmol) in anhydrous DCM (30 mL) was added TiCl4 (1 M solution in DCM, 7.8 mL, 7.8 mmol) dropwise within 15 minutes at room temperature. It was stirred another 1 h after the addition. To this mixture was added bis-trimethylsilylcarbodiimide (1.48 g, 1.89 mL, 8.46 mmol) dropwise. The resulting mixture was stirred for another 18 h after the addition. The reaction mixture was poured into ice-water (100 g), extracted with DCM (3×50 mL). The combined organic phases were dried over anhydrous Na2SO4, and filtered. The filtrate was concentrated to give (E)-N-(8-chlorodibenzo[b,f]oxepin-10(11H)-ylidene)cyanamide (500 mg, 68%), which was used for next step without further purification.

Provenance & Evidence