1949 年 69 巻 3 号 p. 137-140
Condensation of 2-aryloxylepidine methiodide and aromatic aldehydes even with the use of amines having active hydrogen as a catalyst, will not give styryl dyes, as in the formation of 2-amino- or 2-methylaminolepidine methiodide by the use of ammonia and methylamine, respectively. Syntheses of 2-aminostyryl dyes were tried by the condensation of 2-aminolepidine methiodide and aromatic aldehydes. However, styryl dyes could only be obtained when the amino radicals were phenylamino or benzylamino and no such compounds could be obtained in the cases of -NH2, -NH⋅CH3 or -N(C2H5)2. These facts, compared with the facts that 4-aryloxy and 4-amino-quinaldine methiodide give 4-aminostyryl dyes under the same conditions, seem to point out that the activities of both the methyl radical at C4 and the phenoxy radical at C2 have decreased greatly in the 2-aryloxylepidine and that it easily forms 1, 2-quinolone.