3-Methylpyridine → 2,2-dimethyl-2H-1-benzopyran-6-carbonitrile

Beteiligte Stoffe

Reaktionsschritte

A 500-mL, 3-necked, round-bottomed flask topped with a distilling head, internal temperature probe/argon inlet, and an overhead stirrer was sequentially charged with the title A compound, 1,1-diethoxy-3-methyl-2-butene (26.59 g, 168.00 mmol), p-xylene (300 mL), 4-cyanophenol (15.00 g, 125.92 mmol), and 3-picoline (3.0 mL, 2.870 g, 30.83 mmol). The reaction mixture was rapidly stirred. The internal temperature was rapidly brought up to 115° C. and then slowly raised in order to distill off the ethanol formed during the reaction.

Herkunft & Nachweise