140843-37-4Relevant articles and documents
Reaction of Anions from Monoimines of Benzil with Alkylating Agents. Photochemical Reactivity of Some 4-Alkoxy-2-aza-1,3-dienes
Armesto, Diego,Horspool, William M.,Ortiz, Maria J.,Romano, Santiago
, p. 171 - 176 (2007/10/02)
The reaction of benzil benzhydrylmonoimine 6a with methyl iodide or dimethyl sulphate as the electrophile affords 4-alkoxy-2-aza-1,3-dienes resulting from an O-alkylation.When benzyl chloride is employed, products of O-alkylation C-alkylation and cyclization are produced, while with toluene-p-sulphonyl chloride only cyclization to a dihydro-oxazole takes place.Benzil α-phenylethylmonoimine 6b yields only products of C- and/or O-alkylation.In one case, when a large excess of dimethyl sulphate is used, cyclization affords N-methyl-2,3,5-triphenylpyrrole.Irradiation of the O-alkylated compounds (E)- and (Z)-4-methoxy-1,1,3,4-tetraphenyl-2-azabuta-1,3-diene and (E)-4-benzyloxy-1,1,3,4-tetraphenyl-2-azabuta-1,3-dienes in the presence of perchloric acid yields isoquinoline derivatives by a photo-Mannich reaction.
