16855-95-1

Basic information

• Product Name: 4-methyl-4H-pyran
• Synonyms: 4H-Pyran, 4-methyl-
• CAS NO: 16855-95-1
• Molecular Formula: C₆H₈O
• Molecular Weight: 96.1271
• Mol File: 16855-95-1.mol
• Article Data: 2

Chemical Properties

• Boiling Point: 143.3°C at 760 mmHg
• Flash Point: 30.7°C
• Density: 0.923g/cm³
• Vapor Pressure: 6.75mmHg at 25°C
• Refractive Index: 1.461
• CAS DataBase Reference: 4-methyl-4H-pyran(CAS DataBase Reference)
• NIST Chemistry Reference: 4-methyl-4H-pyran(16855-95-1)
• EPA Substance Registry System: 4-methyl-4H-pyran(16855-95-1)

Safety Data

• Hazardous Substances Data: 16855-95-1(Hazardous Substances Data)

Upstream product

• 6280-15-5 3-methylpentanedial 
• 171015-46-6 2,6-dichloro-4-methyltetrahydropyran 

Relevant articles and documents

Pyrylium salts in polyene natural product synthesis: organometallic additions to 4-methylpyrylium tetrafluoroborate

The synthetic utility of organometallic additions to pyrylium salts as a procedure for the stereocontrolled preparation of 2Z,4E-dienals, and the use of these compounds in polyene natural product synthesis, is summarised.The extension of this methodology to 4-methylpyrylium tetrafluoroborate to give a new route to 3-methyl-2Z,4E-dienals via a six-carbon organometallic homologation procedure is then described.Finally, the utilisation of this methodology to provide a concise synthetic approach to 13Z-retinal, retinal and a range of retinal analogues is then elaborated.