Macrocycles synthétiques. II. Action du sodium sur les dianiles des polyméthylènedioxy‐2,2′‐dibenzaldéhydes

Abstract

The macrocyclic compounds IV (n = 4–7) are synthesized by adding toluene solutions of the dianils III under conditions of high dilution to an emulsion of sodium in the same solvent.

The Chemistry of Imines.

“…N-o-Methoxybenzylideneaniline is reduced to 1,2dianilino-1,2-di-o-methoxyphenylethane in 90% yield using sodium and toluene. Both the meso and racemic isomers were isolated (130,131). Isopropylmagnesium chloride reduces N-benzylidenebutylamine in the presence of manganous chloride to give the bimolecular reduction product in 81% yield (242).…”

Electrochemical reduction of di-Schiff bases. Synthesis of piperazines, indoloindoles, diazepines, and diazocines

“…2,2Bis(phenyliminobenzyl)biphenyl (15). A solution of 3.62 g (0.01 mol) of 2,2'-dibenzoylbiphenyl, 3.72 g (0.04 mol) of aniline, and ca.…”

“…In order to determine whether or not cyclization could occur where elimination and aromatization are blocked, 2,2'-bis [ (phenylimino)benzyl] biphenyl (15) was prepared.…”