反応 #348213

反応方程式

6,7-dichloro-2,3-dihydro-5-(2-thenoyl)-benzofuran-2-carboxylic acid

acetonitrile

→

(+)-α-methylbenzylamine

反応条件

実験手順

By following substantially the procedure described in step A, the partially resolved 6,7-dichloro-2,3-dihydro-5-(2-thenoyl)-benzofuran-2-carboxylic acid (12.0 g., 0.035 mole); (obtained from the acetonitrile mother liquor of step A) and (+)-α-methylbenzylamine (4.3 g., 0.035 mole) are mixed in acetonitrile (1000 ml.). The resultant salt (14.5 g.) was thrice recrystallized from a minimum volume of acetonitrile and ethanol (10:1) to obtain 9.4 g. of the salt of the pure (-)-enantiomer which is converted to the acid by treatment of the salt with dilute hydrochloric acid and ether.

出典