491-42-9

Basic information

• Product Name: 4H-quinolizin-4-one
• CAS NO: 491-42-9
• Molecular Formula: C₉H₇NO
• Molecular Weight: 145.158
• Mol File: 491-42-9.mol
• Article Data: 1

Chemical Properties

• Boiling Point: 376.1°C at 760 mmHg
• Flash Point: 192.6°C
• Density: 1.24g/cm³
• Vapor Pressure: 7.44E-06mmHg at 25°C
• Refractive Index: 1.658
• CAS DataBase Reference: 4H-quinolizin-4-one(CAS DataBase Reference)
• NIST Chemistry Reference: 4H-quinolizin-4-one(491-42-9)
• EPA Substance Registry System: 4H-quinolizin-4-one(491-42-9)

Safety Data

• Hazardous Substances Data: 491-42-9(Hazardous Substances Data)

Upstream product

• 491-40-7 quinolizidin-4-one 
• 127391-39-3 ((Z)-2-But-1-en-3-ynyl)-pyridine 1-oxide 

Downstream Products

• 491-40-7 quinolizidin-4-one 

Relevant articles and documents

HETEROCYCLIC SYNTHESIS BY ELECTROCYCLIZATION OF EXTENDED DIPOLES: A NOVEL ACCESS TO THE INDOLIZINE AND QUINOLIZINE SYSTEMS

On thermal activation α-butenynyl substituted pyridine-N-oxides 4 undergo a multistep rearrangement affording 4-oxo-4H-quinolizines (8) and 2-acylindolizines (9).In the geometrical isomeriziation of E-4 to Z-4 annulated isoxazolidines (7) are involved as unstable intermediates.