Bis(trimethylsilyl)carbodiimide → HCID 178511868, compound

Participants

Reaction Steps

To a solution of 6-bromo-4′,5′-dihydro-2′H-spiro[chroman-2,3′-furan]-4-one (206 mg, 0.731 mmol) in anhydrous DCM (6 mL) was added TiCl4(281 mg, 1.48 mmol) dropwise within 15 minutes at room temperature and resulting mixture was stirred for 1 h. To this mixture was added N,N′-methanediylidenebis(1,1,1-trimethylsilanamine) (300 mg, 1.61 mmol). The resulting mixture was stirred for another 18 hours after addition. The reaction mixture was poured into water-ice and extracted with DCM. The combined organic phases were dried over anhydrous Na2SO4, filtered and concentrated to give crude product (225 mg, 100%), which was used in the next step without further purification.

Provenance & Evidence