1983
DOI: 10.1246/bcsj.56.1482
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A New Synthesis of Triphenodithiazines and Triphenodithiazinequinoes

Abstract: A new class of 6,13-bis(arylamino)triphenodithiazines has been synthesized by condensing chloranil with arylamines followed by the reaction of the resulting 2,5-bis(arylamino)-3,6-dichloro-1,4-benzoquinones with zinc 2-aminobenzenthiolates (4) in the presence of a base in Methyl Cellosolve. On the other hand, the reaction of 2,5-dianilino-3,6-dichloro-1,4-benzoquinone (3a) with 4 in DMF proceeded unexpectedly to give 7,14-dihydro-6,13-triphenodithiazinequinones by eliminating the anilino groups of 3a.

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Cited by 11 publications
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“…This compound is more bathochromic than 81. 222 Nishi et al 223 obtained a similar phenothiazinequinone dye 83 (723 nm) through the reaction of chloroaniline with aniline followed by reaction with zinc 2-aminobenzenethiolate in dimethylformamide.…”
Section: Scheme Xmentioning
confidence: 99%
“…This compound is more bathochromic than 81. 222 Nishi et al 223 obtained a similar phenothiazinequinone dye 83 (723 nm) through the reaction of chloroaniline with aniline followed by reaction with zinc 2-aminobenzenethiolate in dimethylformamide.…”
Section: Scheme Xmentioning
confidence: 99%