1940-02-9

Basic information

• Product Name: Benzenebutanoic acid, anhydride
• CAS NO: 1940-02-9
• Molecular Formula: C20H22O3
• Molecular Weight: 310.393
• Mol File: 1940-02-9.mol
• Article Data: 6

Chemical Properties

• CAS DataBase Reference: Benzenebutanoic acid, anhydride(CAS DataBase Reference)
• NIST Chemistry Reference: Benzenebutanoic acid, anhydride(1940-02-9)
• EPA Substance Registry System: Benzenebutanoic acid, anhydride(1940-02-9)

Safety Data

• Hazardous Substances Data: 1940-02-9(Hazardous Substances Data)

Upstream product

• 1821-12-1 4-Phenylbutyric acid 
• 56-23-5 tetrachloromethane 
• 506-68-3 bromocyane 
• 75-52-5 nitromethane 
• 79-01-6 Trichloroethylene 
• 98-95-3 nitrobenzene 
• 68-12-2 N,N-dimethyl-formamide 
• 75-05-8 acetonitrile 

Downstream Products

• 64353-78-2 4-phenyl-butyric acid cyclohexylamide 
• 3173-53-3 Cyclohexyl isocyanate 
• 1821-12-1 4-Phenylbutyric acid 
• 591-50-4 iodobenzene 
• 2046-17-5 methyl 3-(benzyl)propanoate 

Relevant articles and documents

Photochemical Asymmetric Nickel-Catalyzed Acyl Cross-Coupling

Photochemical enantioselective nickel-catalyzed cross-coupling reactions are difficult to implement. We report a visible-light-mediated strategy that successfully couples symmetrical anhydrides and 4-alkyl dihydropyridines (DHPs) to afford enantioenriched α-substituted ketones under mild conditions. The chemistry does not require exogenous photocatalysts. It is triggered by the direct excitation of DHPs, which act as a radical source and as a reductant, facilitating the turnover of the chiral catalytic nickel complex.

METHOD FOR PRODUCING CARBOXYLIC ANHYDRIDE AND ARYLBORONIC ACID COMPOUND

When phthalic acid is heated in heptane under azeotropic reflux conditions in the presence of a catalytic amount of an arylboronic acid compound (such as 2,6-(diisopropylaminomethyl)phenylboronic acid or 2,6-bis(diisopropylaminomethyl)phenylboronic acid), phthalic anhydride is obtained in high yield.

Combinatorial modification of natural products: Preparation of unencoded and encoded libraries of Rauwolfia alkaloids

We report the preparation of combinatorial libraries which consist of derivatives of the stereoisomeric alkaloids yohimbine and rauwolscine- members of the Rauwolfia genus. The chemistry was performed on solid support using the divide-and-pool method, and involved the derivatization of the E- ring carboxylates and hydroxyls of these alkaloids with 36 amino acids and 22 carboxylic acids, respectively, to afford 792 bifunctionalized derivatives. The rauwolscine library was prepared using an encoding strategy in which the identity of each incorporated amino acid was recorded by cosynthesizing chemically inert tags prior to the pooling step. The general strategy for library synthesis exploits existing functionality present on the natural products, and should be applicable to other families of secondary metabolites.