77117-11-4

Basic information

• Product Name: 7-methyl<1>benzopyrano<4,3-d><1>benzoxacino<4,3-b>pyridine-6,16-dione
• Synonyms: 7-methyl<1>benzopyrano<4,3-d><1>benzoxacino<4,3-b>pyridine-6,16-dione
• CAS NO: 77117-11-4
• Molecular Weight: 355.35
• Mol File: 77117-11-4.mol
• Article Data: 1

Chemical Properties

• CAS DataBase Reference: 7-methyl<1>benzopyrano<4,3-d><1>benzoxacino<4,3-b>pyridine-6,16-dione(CAS DataBase Reference)
• NIST Chemistry Reference: 7-methyl<1>benzopyrano<4,3-d><1>benzoxacino<4,3-b>pyridine-6,16-dione(77117-11-4)
• EPA Substance Registry System: 7-methyl<1>benzopyrano<4,3-d><1>benzoxacino<4,3-b>pyridine-6,16-dione(77117-11-4)

Safety Data

• Hazardous Substances Data: 77117-11-4(Hazardous Substances Data)

Upstream product

• 141-97-9 ethyl acetoacetate 
• 90-02-8 salicylaldehyde 
• 626-34-6 ethyl aminocrotonate 

Relevant articles and documents

A Novel Pentacyclic Pyridine Dilactone. 7-Methylbenzopyranobenzoxacinopyridine-6,16-dione

When equimolar quantities of salicylaldehyde 2 and ethyl 3-amino-2-butenoate 3 or its constituents (ethyl 3-oxobutanoate and ammonia) were refluxed on a steam-bath for 6 hours with a trace of acetic acid, two products, a pentacyclic pyridine dilactone 4 and 3-acetyl coumarin 5, resulted in 15percent and 45percent yields, respectively.The structure of 4 was elucidated as 7-methylbenzopyranobenzoxacinopyridine-6,16-dione on the basis of its spectral data.The mechanism of its formation has been discussed.The reaction has been extended to three more substituted salicylaldehydes.