492-22-8 Usage
Description
Thioxanthone is a heterocyclic compound that is a sulfur analog of xanthone.Thioxanthone can be prepared by the reaction of diphenyl sulfide with phosgene in the presence of catalytic aluminium chloride. This synthesis can be seen as a special case of the Friedel-Crafts acylation. The reduction product is thioxanthene.Thioxanthone dissolves in concentrated sulfuric acid to give a yellow colored liquid with intense green fluorescence. A mixture of the thioxanthone derivatives of 2- and 4-isopropylthioxanthone (ITX) is used in the printing industry. Pharmaceutical drugs that are derivatives of thioxanthone include hycanthone and lucanthone.
Chemical Properties
slightly yellow crystalline powder
Uses
Thioxanthen-9-one is a reagent and a starting material for the synthesis of Metixene Hydrochloride. It is also used for highly functional group tolerant and chemoselective oxidation of aromatic or aliphatic sulfides to sulfoxides with hydrogen peroxide.
Purification Methods
It forms yellow needles from CHCl3 or EtOH and sublimes in vacuo. It is soluble in CS2, hot AcOH, and dissolves in conc H2SO4 to give a yellow colour with green fluorescence in VIS light. The sulfone has m 187o (from EtOH), and the hydrazone has m 115o (yellow leaflets from EtOH/*C6H6). The oxime has m 194-196o (from pet ether). [Szmant et al. J Org Chem 18 745 1953, Ullmann et al. Chem Ber 49 2509 1916, NMR: Sharpless et al. Org Magn Res 6 115 1974, Beilstein 17 H 357, 17 I 191, 17 III/IV 5302, 17/10 V 437.]
Check Digit Verification of cas no
The CAS Registry Mumber 492-22-8 includes 6 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 3 digits, 4,9 and 2 respectively; the second part has 2 digits, 2 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 492-22:
(5*4)+(4*9)+(3*2)+(2*2)+(1*2)=68
68 % 10 = 8
So 492-22-8 is a valid CAS Registry Number.
InChI:InChI=1/C13H8OS/c14-13-9-5-1-3-7-11(9)15-12-8-4-2-6-10(12)13/h1-8H
492-22-8Relevant articles and documents
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Patrick et al.
, p. 3303,3305 (1978)
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Tamura et al.
, p. 507 (1976)
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COMPOUND FOR ORGANIC ELECTRONIC ELEMENT, ORGANIC ELECTRONIC ELEMENT USING THE SAME, AND AN ELECTRONIC DEVICE THEREOF
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Paragraph 0097; 0099; 0103; 0105, (2021/05/21)
The present invention provides a novel compound that can improve the luminous efficiency, stability and life span of the element, an organic electronic element using the same, and an electronic device thereof.
Method for preparing aldehyde ketone compound through olefin oxidation
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Paragraph 0019, (2021/04/07)
The invention provides a method for preparing an aldehyde ketone compound by olefin oxidation, which relates to an olefin oxidative cracking reaction in which oxygen participates. The method comprises the following specific steps: in the presence of a solvent and an oxidant, carrying out oxidative cracking on an olefin raw material to obtain a corresponding aldehyde ketone product. Compared with the traditional method, the method does not need to add any catalyst or ligand, does not need to use high-pressure oxygen, has the advantages of simple and mild reaction conditions, environment friendliness, low cost, high atom economy and the like, is wide in substrate application range and high in yield, and has a wide application prospect in the aspects of synthesis of aldehyde ketone medical intermediates and chemical raw materials.
