14660-47-0

Basic information

• Product Name: 2,3,5,6-Pyridintetracarbonsaeure-tetramethylester
• CAS NO: 14660-47-0
• Molecular Weight: 311.248
• Mol File: 14660-47-0.mol
• Article Data: 1

Chemical Properties

• CAS DataBase Reference: 2,3,5,6-Pyridintetracarbonsaeure-tetramethylester(CAS DataBase Reference)
• NIST Chemistry Reference: 2,3,5,6-Pyridintetracarbonsaeure-tetramethylester(14660-47-0)
• EPA Substance Registry System: 2,3,5,6-Pyridintetracarbonsaeure-tetramethylester(14660-47-0)

Safety Data

• Hazardous Substances Data: 14660-47-0(Hazardous Substances Data)

Upstream product

• 762-42-5 dimethyl acetylenedicarboxylate 
• 53709-32-3 3-(Dimethylamino)-4-(phenylthio)sydnon 

Downstream Products

• 1422513-44-7 C₉HN₅*C₆H₆O₂ 
• 1422513-45-8 C₆H₆O₂*C₉HN₅ 
• 17638-20-9 2,3,5,6-tetracyanopyridine 

Relevant articles and documents

Neue thermische Reaktionen von 3 Amino- und 4-(Phenylthio)sydnonen mit Alkinen und Alkenen

As cyclic azomethine imines, the 3-aminosydnones 1a - c, e - h react at 80 - 160 deg C with dimethyl acetylenedicarboxylate via non-isolable primary adducts 3 with evolution of carbon dioxide to produce the 1-aminopyrazoles 2a, c, d, e - h (yield 70 - 2percent) of table 1.Surprisingly, the analogous reactions of 1a, e proceed also with formation of the 1,2-oxazin-6-one derivative 4 as a result of an amino nitrene elimination from the primary adduct 3 which competes with the carbon dioxide elimination.In some cases, the 1-methylpyrazole 13, the pyridinetetracarboxylic ester18, as well as the benzothiophene derivative 19 are also isolable.Furthermore, the reactions of 1 with diphenylacetylene, styrene and dimethyl fumarate are described.