Syntheses of Methylenedioxydiphenides and Dimethoxydiphenides
1976 年 24 巻 9 号 p. 2191-2198
詳細
1976 年 24 巻 9 号 p. 2191-2198
Methylenedioxydiphenides (IIa and IIIa) and dimethoxydiphenides (IIb, c and IIIb, c) were prepared from unsymmetrical diphenaldehydes (IVa-c) by intramolecular Cannizzaro reactions and then lactonization of the resulting alcoholic acids (Va-c and VIa-c). The structures of IIa-c and IIIa-c were confirmed by comparison of physical and spectral data of these compounds with those of authentic samples prepared by unambiguous methods. The directions of the two kinds of intramolecular Cannizzaro reactions of IV to form V and VI are discussed.
