Chemistry of Heterocyclic Compounds p. 932 - 936 (1981)
Update date:2022-07-29
Topics:
Gella, I. M.
Vakula, V. N.
Orlov, V. D.
Dyes that absorb at 525-580 nm were obtained by the reaction of derivatives of 1,3-dithiolium iodide (or perchlorate) with 1-phenyl-3,5-di-R-2-pyrazolines, N,N-dimethylaniline, and benzaldehyde N-methylphenylhydrazone.It was demonstrated by alternative synthesis that the reaction takes place in the para position of the N-phenyl group.Dyes can be obtained in two steps from 2-dimethylamino-1,3-dithioles and activated aromatic compounds with subsequent oxidation of the intermediate leuco compounds with air oxygen.
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Doi:10.1080/14786419.2021.1903005
(2021)Doi:10.1021/jo01171a006
(1946)Doi:10.1021/ja01179a032
(1949)Doi:10.1039/c39820001339
(1982)Doi:10.1021/ja01636a047
(1954)Doi:10.1021/ja01862a047
(1940)
