3044-70-0

Basic information

• Product Name: Pyrylium, 2,6-dimethyl-4-phenyl-, perchlorate
• CAS NO: 3044-70-0
• Molecular Formula: C13H13O.ClO4
• Molecular Weight: 284.696
• Mol File: 3044-70-0.mol
• Article Data: 2

Chemical Properties

• CAS DataBase Reference: Pyrylium, 2,6-dimethyl-4-phenyl-, perchlorate(CAS DataBase Reference)
• NIST Chemistry Reference: Pyrylium, 2,6-dimethyl-4-phenyl-, perchlorate(3044-70-0)
• EPA Substance Registry System: Pyrylium, 2,6-dimethyl-4-phenyl-, perchlorate(3044-70-0)

Safety Data

• Hazardous Substances Data: 3044-70-0(Hazardous Substances Data)

Upstream product

• 75-36-5 acetyl chloride 
• 98-83-9 isopropenylbenzene 

Downstream Products

• 3044-71-1 2,6-dimethyl-4-phenylpyridine 
• 42758-88-3 4,8-dimethyl-6-phenylazulene 
• 96852-94-7 4-phenyl-3-heptene-2,6-dione 
• 82671-54-3 2,6-dimethyl-4-phenylpyridine N-oxide 
• 75359-71-6 4-phenylheptane-2,6-dione 
• 113728-85-1 5-Methyl-7-phenyl-indolizine 

Relevant articles and documents

Reaction of pyrylium salts with nucleophiles. Part 25. Formation of pyridine-1-oxides, 2-isoxazolines and 1-pyrazoline-1-oxides

The reaction of tri- and tetrasubstituted pyrylium salts with hydroxylamine affords acyclic keto-ketoximes (to be described in a separate paper) which cyclize yielding pyridine-1-oxides and/or 2-isoxazolines. Both these classes of compounds, with many possible applications, can thus be obtained simply and in good yield. The regioselectivity of 2-isoxazoline formation from unsymetrically substituted pyrylium salts is discussed. An unprecedented minor product formed from 2,6-di-t-butyl-4-methylpyrylium perchlorate and two molecules of hydroxylamine is the corresponding 1- pyrazoline-1-oxide. Mechanistic rationalization of all products are provided.