139978-31-7

Basic information

• Product Name: 2,4-Pentanedione, 3-(3,5-dimethoxy-4-oxo-2,5-cyclohexadien-1-ylidene)-
• CAS NO: 139978-31-7
• Molecular Formula: C13H14O5
• Molecular Weight: 250.251
• Mol File: 139978-31-7.mol
• Article Data: 1

Chemical Properties

• CAS DataBase Reference: 2,4-Pentanedione, 3-(3,5-dimethoxy-4-oxo-2,5-cyclohexadien-1-ylidene)-(CAS DataBase Reference)
• NIST Chemistry Reference: 2,4-Pentanedione, 3-(3,5-dimethoxy-4-oxo-2,5-cyclohexadien-1-ylidene)-(139978-31-7)
• EPA Substance Registry System: 2,4-Pentanedione, 3-(3,5-dimethoxy-4-oxo-2,5-cyclohexadien-1-ylidene)-(139978-31-7)

Safety Data

• Hazardous Substances Data: 139978-31-7(Hazardous Substances Data)

Upstream product

• 91-10-1 1,3-dimethoxy-2-hydroxy-benzene 

Relevant articles and documents

Choice of Manganese(III) Complexes for the Synthesis of 4,4'-Biphenyldiols and 4,4'-Diphenoquinones

2,6-Disubstituted phenols are oxidized with tris(2,4-pentanedionato)manganese(III), , in glacial acetic acid to give the corresponding 4,4'-biphenyldiols in high yields, whereas similar reactions using manganase(III) acetate, , instead of quantitatively yield the corresponding 4,4'-diphenoquinones.Cross-coupling reactions of 2,6-di-t-butylphenol and other substituted phenols afford the corresponding cross-coupled 4,4'-biphenyldiols and 4,4'-diphenoquinones together with oxidation products derived from them starting phenols themselves.The advantageous use of and Mn(OAc)3> in the ubiqitous phenol coupling reaction is discussed.