反应详情

A solution of 3-bromo-2-formyl-6-methoxyphenylmethyl carbonate (100 g, 0.34 mole), 500 mL 10% aqueous NaOH, and 2 L MeOH was stirred at reflux for 2 hours. After cooling to room temperature, the MeOH was removed (in-vacuo). The aqueous solution was cooled to 0° and acidified with concentrated HCl. The solid was filtered, washed with water, and dried (in-vacuo) to yield 107 g yellow solid which was recrystallized from 2-propanol to yield 62 g yellow solid; mp 95°-6°; M+ 230.

1. temperatureat reflux for 2 hours
2. customthe MeOH was removed (in-vacuo)
3. temperatureThe aqueous solution was cooled to 0°
4. filtrationThe solid was filtered
5. washwashed with water
6. customdried (in-vacuo)