142228-70-4

Basic information

• Product Name: 4H-1-Benzopyran-4-one, 2,3-dihydro-2,2,8-trimethyl-
• Synonyms: 2,2,8-trimethyl-chroman-4-one;2,2,8-Trimethyl-chroman-4-on
• CAS NO: 142228-70-4
• Molecular Formula: C12H14O2
• Molecular Weight: 190.23800
• Mol File: 142228-70-4.mol
• Article Data: 4

Chemical Properties

• CAS DataBase Reference: 4H-1-Benzopyran-4-one, 2,3-dihydro-2,2,8-trimethyl-(CAS DataBase Reference)
• NIST Chemistry Reference: 4H-1-Benzopyran-4-one, 2,3-dihydro-2,2,8-trimethyl-(142228-70-4)
• EPA Substance Registry System: 4H-1-Benzopyran-4-one, 2,3-dihydro-2,2,8-trimethyl-(142228-70-4)

Safety Data

• Hazardous Substances Data: 142228-70-4(Hazardous Substances Data)

Upstream product

• 95-48-7 ortho-cresol 
• 3350-78-5 3,3-Dimethylacryloyl chloride 
• 159151-10-7 7-Cyanato-2,2,8-trimethyl-chroman-4-one 
• 50544-72-4 2,3-dihydro-7-hydroxy-2,2,8-trimethyl-4H-benzopyran-4-one 
• 7446-70-0 aluminium trichloride 
• 159214-69-4 2'-methylphenyl 3-methylbut-2-enoate 
• 143260-30-4 Dimethyl-thiocarbamic acid S-(2,2,8-trimethyl-4-oxo-chroman-7-yl) ester 
• 159151-27-6 7-Mercapto-2,2,8-trimethyl-chroman-4-one 
• 541-47-9 3-Methylbutenoic acid 
• 143260-21-3 Dimethyl-thiocarbamic acid O-(2,2,8-trimethyl-4-oxo-chroman-7-yl) ester 

Relevant articles and documents

Facile deoxygenation of hydroxylated flavonoids by palladium-catalysed reduction of its triflate derivatives

An efficient procedure to deoxygenate hydroxy substituted flavonoids, isoflavonoids and related compounds via their trifluoromethanesulfonates is presented. Their reduction with formic acid in the presence of a catalytic amount of palladium acetate, triethylamine and 1,3-bis(diphenyl-phosphanyl) propane (dppp) in DMF results in their des-hyaroxy derivatives without affecting other functional groups.

ON THE REACTION OF SUBSTITUTED PHENOLS AND 3-METHYLBUT-2-ENOIC ACID. A COMPARATIVE STUDY

A systematic and comparative study of the reaction of a series of substituted phenols and 3-methylbut-2-enoic acid in zinc chloride/phosphorus oxychloride and aluminum chloride/phosphorus oxychloride reveals that the formation of phenolic esters and 2,2-dimethyl-4-chromanones is strongly influenced by the substituents, their popsition on the aromatic ring of the starting phenols.Based on our study, a mixed Friedel-Crafts and Fries rearrangement mechanism is in operation in these reactions.