128787-14-4

Basic information

• Product Name: 1,1,7,10-Tetramethyl-1,2,6,10b-tetrahydro-6,10b-o-benzenoaceanthrylene
• CAS NO: 128787-14-4
• Molecular Weight: 336.477
• Mol File: 128787-14-4.mol
• Article Data: 1

Chemical Properties

• CAS DataBase Reference: 1,1,7,10-Tetramethyl-1,2,6,10b-tetrahydro-6,10b-o-benzenoaceanthrylene(CAS DataBase Reference)
• NIST Chemistry Reference: 1,1,7,10-Tetramethyl-1,2,6,10b-tetrahydro-6,10b-o-benzenoaceanthrylene(128787-14-4)
• EPA Substance Registry System: 1,1,7,10-Tetramethyl-1,2,6,10b-tetrahydro-6,10b-o-benzenoaceanthrylene(128787-14-4)

Safety Data

• Hazardous Substances Data: 128787-14-4(Hazardous Substances Data)

Upstream product

• 104805-30-3 ap-3-Methyl-3-(1,4-dimethyl-9-triptycyl)butanoic acid  
• 56-37-1 N-benzyl-N,N,N-triethylammonium chloride 

Relevant articles and documents

Reactivities of stable rotamers. XXXII. chlorodecarboxylation of 3-(1,4- dimethyl-9-triptycyl)-3-methylbutanoic acid rotamers

Rotational isomers of the title carboxylic acid were treated with lead(IV) acetate in the presence of lithium chloride or benzyltriethylammonium chloride in benzene. The ap-isomer afforded a chloride, which was expected from normal chlorodecarboxylation, in addition to a cyclized compound, which was produced by radical addition to a near-by benzene ring. By contrast, the sc-isomer afforded no normal chloride, but a benzylic chloride, which was formed by hydrogen transfer to the radical site in the 9-substituent from the benzylic position, was the main product. In addition, an acetonyl ester of the original sc-carboxylic acid and a small amount each of I-acetoxymethyl compound and an olefin were obtained. Possible mechanisms of formation of these compounds are discussed on the ground of the stability of the benzylic radical and participation of a methyl group.