38487-11-5

Basic information

• Product Name: diphenylmethane-2,2'-dicarboxylic acid
• Synonyms: diphenylmethane-2,2'-dicarboxylic acid
• CAS NO: 38487-11-5
• Molecular Weight: 256.258
• Mol File: 38487-11-5.mol
• Article Data: 3

Chemical Properties

• CAS DataBase Reference: diphenylmethane-2,2'-dicarboxylic acid(CAS DataBase Reference)
• NIST Chemistry Reference: diphenylmethane-2,2'-dicarboxylic acid(38487-11-5)
• EPA Substance Registry System: diphenylmethane-2,2'-dicarboxylic acid(38487-11-5)

Safety Data

• Hazardous Substances Data: 38487-11-5(Hazardous Substances Data)

Upstream product

• 10034-85-2 hydrogen iodide 
• 109407-76-3 (2-carboxyphenyl)phtalide 
• 72872-62-9 o,o'-benzil dicarboxylic acid 
• 2222-33-5 dibenzosuberenon 
• 573-32-0 benzophenone-2,2'-dicarboxylic acid 

Downstream Products

• 573-32-0 benzophenone-2,2'-dicarboxylic acid 
• 65594-65-2 dimethyl 2,2'-carbonyldibenzoate 
• 38059-08-4 bis<(2-hydroxymethyl)phenyl>methane 
• 108059-41-2 2-<2-(1-Hydroxy-1-methylethyl)benzyl>benzoesaeure-methylester 
• 108059-36-5 2,2'-Methylenbis(α,α-dimethylbenzylalkohol) 
• 108059-42-3 2-<2-(1-Hydroxy-1-methylethyl)benzyl>acetophenon 
• 108059-39-8 2,2'-Methylenbisacetophenon 
• 376629-97-9 2,2’-bis(2-diazo-2-methoxycarbonyl-1-oxoethyl)diphenylmethane 
• 945762-06-1 2,2’-bis(2-methoxycarbonyl-1-oxoethyl)diphenylmethane 
• 1026443-13-9 C₃₃H₃₄N₂O₄ 
• 41634-38-2 dimethyl diphenylmethane-2,2'-dicarboxylate 

Relevant articles and documents

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Dibenzocyclooctene-, Dibenzochalcocine-, and Diarenochalconinediones

2,2'-Oxybis-, -thiobis-, and -methylenebisbenzoic esters 2a-c react with methyllithium in ether to give low yields of 5H-dibenzochalcocine-5,7(6H)-diones 6a, 7a, and dibenzocyclooctene-5,7(6H,12H)-dione (8), respectively.Very good yields of such heterocycles with oxygen (6a-h, 37), sulfur (7a-h, 38) and selenium (36) as key atom are obtained when diaryl ethers (21, 22, 25), -sulfides (27, 29, 30), and -selenides (33) that contain 2'-acetyl- (or -propionyl-) and 2-methoxycarbonyl groups are treated with sodium hydride in boiling toluene.Analogously are prepared the dibenzoxonine-11,13(6H,12H)diones 62a-c and 7H-benzonaphthothionine-7,9-(8H)-dione (65) which are expanded by one ring member.In the analogous reaction of a corresponding benzophenone derivative 35, spiro-3(2H),3'-dione (41) is formed in a tandem reaction. - Under phase transfer conditions the dibenzochalcocinediones 6, 7, 36 and also the corresponding nitrogen cycles 5 react to give mixtures of C- (42-45) and O-alkyl derivatives (46-49).Methyllithium and diisobutylaluminium hydride provide the carbinols 50-54.With bromine and SO2Cl2, respectively, the methylene group is mono- or dihalogenated to the products 56, 57; defined nitration was only possible for the oxacycle 6a.