7653-60-3

Basic information

• Product Name: 3-Methyl-2H-1,4-benzoxazin-2-one
• Synonyms: 3-Methyl-2H-1,4-benzoxazin-2-one;3-Methyl-2H-benzo[b][1,4]oxazin-2-one
• CAS NO: 7653-60-3
• Molecular Formula: C₉H₇NO₂
• Molecular Weight: 161.16
• Mol File: 7653-60-3.mol

Chemical Properties

• Boiling Point: 283.5°C at 760 mmHg
• Flash Point: 144.7°C
• Appearance: /
• Density: 1.25g/cm³
• Vapor Pressure: 0.00316mmHg at 25°C
• Refractive Index: 1.604
• CAS DataBase Reference: 3-Methyl-2H-1,4-benzoxazin-2-one(CAS DataBase Reference)
• NIST Chemistry Reference: 3-Methyl-2H-1,4-benzoxazin-2-one(7653-60-3)
• EPA Substance Registry System: 3-Methyl-2H-1,4-benzoxazin-2-one(7653-60-3)

Safety Data

• Hazardous Substances Data: 7653-60-3(Hazardous Substances Data)

Usage

InChI:InChI=1/C9H7NO2/c1-6-9(11)12-8-5-3-2-4-7(8)10-6/h2-5H,1H3

Upstream product

• 95-55-6 2-amino-phenol 
• 623-47-2 propynoic acid ethyl ester 
• 922-67-8 propynoic acid methyl ester 

Downstream Products

• 54016-51-2 4-[2-(2-hydroxy-phenylimino)-4-phenyl-but-3-enoyl]-morpholine 
• 54016-53-4 4-[4-(2-hydroxy-phenyl)-2-(2-hydroxy-phenylimino)-but-3-enoyl]-morpholine 
• 1630973-79-3 methyl 5-((4R,5R)-4-(ethoxycarbonyl)-1-(2-hydroxyphenyl)-5-methyl-4,5-dihydro-1H-imidazol-5-yl)oxazole-4-carboxylate 

Relevant articles and documents

Vinylphosphonium salt mediated reaction between alkyl propiolates and aminophenols or hydroxyphenols

Addition of catechol to methyl propiolate or ethyl phenylpropiolate in the presence of Ph3P leads to methyl 2-(1,3-benzodioxol-2-yl)acetate or 3-(1-phenylmethylidene)-1,4-benzodioxin-2-one. 2-Aminophenols react with alkyl propiolates in the pre

Photochemical Dehydrogenation, Ring Contraction, and Ring Expansion of Hydrogenated Derivatives of Benzoxazino-benzoxazine, Quinoxalino-quinoxaline, and Bibenzothiazole

The photochemical properties of the title compounds have been investigated and compared.The benzoxazino-benzoxazine derivatives 1 are photochemically converted into hydrogenated oxazolo derivatives.In some cases this ring contraction is accompanied by a dehydrogenation reaction whereby the heterocyclic ring system becomes aromatic.Hydrogenated quinoxalino-quinoxalines also undergo a photodehydrogenation reaction and become aromatic.However, a ring contraction yielding the the imidazolyl system does not take place.The only investigated sulfur-containing analog has different properties.The stable form is the bibenzothiazole 23 which contains a five-membered heterocyclic ring system.Photochemically 23 rearranges under ring expansion to give the benzothiazino-benzothiazine 24.