Acetic acid, 2-(triphenylphosphoranylidene)-, methyl ester → (E)-3-(1-butyl-4-methoxy-2-naphthalenyl)-2-propenoic acid methyl ester

Participants

Reaction Steps

As in Example 111, 1-butyl-4-methoxy-2-naphthalenecarboxaldehyde (4.05 g) and (carbomethoxymethylene)triphenylphosphorane (6 g) in dichloromethane (40 mL) was stirred at room temperature for 42 hours. Crystallization of the crude reaction product from the normal work up gave 4.1 g of (E)-3-(1-butyl-4-methoxy-2-naphthalenyl)-2-propenoic acid methyl ester, mp 63°-64° C. Anal. Calcd for C19H22O3 : C, 76.48; H, 7.43 Found: C, 75.89; H, 7.26

Provenance & Evidence