Bis(trimethylsilyl)carbodiimide → HCID 178511869, compound

Participants

Reaction Steps

A solution of 3-(4-oxo-2′,3′,5′,6′-tetrahydrospiro[chroman-2,4′-pyran]-6-yl)benzonitrile (170 mg, 0.53 mmol) and TiCl4 (403 mg, 2.12 mmol) in anhydrous DCM (5 mL) was heated at 50 under microwave for 5 mins. Then bis-trimethylsilylcarbodiimide (198 mg, 1.06 mmol) was added and the mixture was heated at 60 for another 30 mins. The reaction mixture was poured into ice-water and extracted with DCM. The combined organic phases were dried over anhydrous Na2SO4, filtered and concentrated to give (Z)—N-(6-(3-cyanophenyl)-2′,3′,5′,6′-tetrahydrospiro[chroman-2,4′-pyran]-4-ylidene)cyanamide (147 mg, crude), which was used in the next step without further purification.

Provenance & Evidence