19814-75-6 Usage
Description
9,9-DIMETHYL-9H-XANTHENE is a heterocyclic building block, which is a type of organic compound that serves as a fundamental structure in the synthesis of more complex molecules. It is characterized by its unique chemical structure, which includes a xanthene core with two methyl groups attached at the 9,9-positions.
Uses
Used in Chemical Synthesis:
9,9-DIMETHYL-9H-XANTHENE is used as a building block for the synthesis of various complex organic molecules. Its unique structure allows it to be a versatile component in the creation of a wide range of compounds.
Used in Pharmaceutical Industry:
9,9-DIMETHYL-9H-XANTHENE is used as a starting material for the preparation of 9,9-dimethylxanthene-4,5-dicarboxylic acid, which can be further utilized in the development of pharmaceutical compounds.
Used in Material Science:
In the field of material science, 9,9-DIMETHYL-9H-XANTHENE is used as a precursor for the synthesis of 9,9-dimethyl-4,5-bis(diphenylphosphino)xanthene. 9,9-DIMETHYL-9H-XANTHENE has potential applications in the development of advanced materials with specific properties, such as those used in optoelectronics or as catalysts.
Used in Organic Chemistry Research:
9,9-DIMETHYL-9H-XANTHENE is also used as a research tool in organic chemistry, where it can be employed to study the reactivity and properties of various functional groups and to develop new synthetic methods and strategies.
Used in the Preparation of Dibenzofuran Derivatives:
9,9-DIMETHYL-9H-XANTHENE is used as a starting material in the preparation of 4,6-bis(dimesitylboryl)dibenzofuran, which is a type of dibenzofuran derivative. These compounds have potential applications in various fields, including pharmaceuticals, materials science, and chemical research.
Check Digit Verification of cas no
The CAS Registry Mumber 19814-75-6 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,9,8,1 and 4 respectively; the second part has 2 digits, 7 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 19814-75:
(7*1)+(6*9)+(5*8)+(4*1)+(3*4)+(2*7)+(1*5)=136
136 % 10 = 6
So 19814-75-6 is a valid CAS Registry Number.
InChI:InChI=1/C15H14O/c1-15(2)11-7-3-5-9-13(11)16-14-10-6-4-8-12(14)15/h3-10H,1-2H3
19814-75-6Relevant articles and documents
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Zaugg,Michaels
, p. 851 (1974)
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Preparation method of 9,9'-dimethyl xanthene
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Paragraph 0019-0021, (2020/12/30)
The invention provides a preparation method of 9,9'-dimethyl xanthene, wherein the preparation method comprises the following steps: dissolving diphenyl ether in a solvent, cooling, dropwise adding n-butyllithium, reacting, dropwise adding acetone at low temperature, cooling to room temperature, quenching with water, separating out an organic phase, concentrating an ether solvent, and carrying outcolumn chromatography purification on the obtained crude product to obtain the product 9,9'-dimethyl xanthene. According to the preparation method, diphenyl ether with low price is used as an initialraw material, a double-lithiation intermediate is constructed through hydrogen trapping reaction of diphenyl ether and n-butyllithium, and then the final product 9,9'-dimethyl xanthene is prepared through nucleophilic substitution reaction of the double-lithiation intermediate and acetone. According to the preparation method, expensive xanthone does not need to be used as an initial raw material,and an explosive chemical trimethylaluminum (superior to a xanthone methylation method) does not need to be used; the maximum separation yield of the method reaches 85%, and the method has high reaction yield.
An electroluminescent compound and an electroluminescent device comprising the same
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Paragraph 0163-0170, (2021/02/02)
The present invention relates to an organic electroluminescent compound represented by chemical formula 1. An organic electroluminescent device comprising the organic electroluminescent compound of the present invention is able to be operated under a lower driving voltage compared to a conventional device with a phosphorescent hast material, and has excellent power efficiency, luminous efficiency, and service life.
