A catalyst don’t appear in the overall stoichiometry of the reaction it catalyzes, but it must appear in at least one of the elementary reactions in the mechanism for the catalyzed reaction. 114772-54-2, Name is 4′-(Bromomethyl)-[1,1′-biphenyl]-2-carbonitrile, molecular formula is C14H10BrN. In an article, author is Choi, JH,once mentioned of 114772-54-2, COA of Formula: C14H10BrN.
Isothiazole ring formation with substituted 2-alkylthio-3-acyl-4-quinolinone using O-(mesitylenesulfonyl)hydroxylamine (MSH)
Isothiazole ring skeleton was formed by the treatment elf substituted 2-alkylthio-3-acyl-4-quinolinone with O-(mesitylene-sulfonyl)hydroxylamine(MSH). A mixture of alkyl transferred 3-methyl-9-alkyl-4,9-dihydroisothiazolo[5,4-b]quinolin-4-one as a major product and dealkylated 3-methyl-4,9-dihydroisothiazolo[5,4-b]quinolin-4-one as a minor product was obtained from unsubstituted 2-alkylthio-3-acyl-4-quinolinone in the presence of K2CO3. When 2 equivalents of MSH were used in the absence of K2CO3 only dealkylated product was obtained in quantitative yield.
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Reference:
Isothiazole – Wikipedia,
,Isothiazole – ScienceDirect.com