A catalyst don’t appear in the overall stoichiometry of the reaction it catalyzes, COA of Formula: 194.2286, but it must appear in at least one of the elementary reactions in the mechanism for the catalyzed reaction. 90-44-8, Name is Anthrone, molecular formula is C14H10O. In an article, author is Ibis, Cemil,once mentioned of 90-44-8.
N,S-substituted nitrodienes from naphthylthiosubstituted nitrodienes and S-, S,S-substituted dienes from hexachloro-1,3-butadiene
Mono(thio)substituted dienes 1 gave compounds 3a-c, 7, 9, and 11 on reaction with pipe-razine derivatives in dry ether. N,S-substituted nitrodiene 5 was obtained from the reaction of 1 with 1,4-dioxospriol 4. Hexachlorobutadiene 12 in a water-ethanol mixture in the presence of sodium hydroxide reacted with ethyleneglycol bismercaptoacetate 13 to give thiosubstituted thioethers 14 and 15.
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Reference:
Thiomorpholine – Wikipedia,
,Thiomorpholine | C4H9NS – PubChem