67069-64-1

Basic information

• Product Name: 4,4-Dimethoxy-2,6-diphenyl-4H-pyran
• CAS NO: 67069-64-1
• Molecular Weight: 294.35
• Mol File: 67069-64-1.mol
• Article Data: 1

Chemical Properties

• CAS DataBase Reference: 4,4-Dimethoxy-2,6-diphenyl-4H-pyran(CAS DataBase Reference)
• NIST Chemistry Reference: 4,4-Dimethoxy-2,6-diphenyl-4H-pyran(67069-64-1)
• EPA Substance Registry System: 4,4-Dimethoxy-2,6-diphenyl-4H-pyran(67069-64-1)

Safety Data

• Hazardous Substances Data: 67069-64-1(Hazardous Substances Data)

Upstream product

• 6552-73-4 sodium methoxide-d3 

Relevant articles and documents

1H Nuclear Magnetic Resonance Study of Methoxide Addition to Pyrylium and Thiopyrylium Cations; Heteroatom and Substituent Effects

Methoxide addition to pyrylium and thiopyrylium salts with various α-substituents (Ph or tBu) and γ-substituents (H, Me, tBu, Et3C, Ph or MeO) in methanol at -40 and 25 deg C has been studied by 1H n.m.r.The composition of the product mixtures, kinetically controlled at -40 deg C and thermodynamically controlled at 25 deg C, gives information on the factors affecting positional selectivity and the relative thermodynamic stability of the addition products (the 2H- and 4H-adduct).The methyl-substituted substrates also undergo deprotonation, to yield the corresponding anhydro-bases.Analysis of heteroatom and substituent effects on the rean course emphasizes the role of polar and steric interactions, and sheds light on the structures of the transition states.