106710-59-2

Basic information

• Product Name: 2,3,5,6-tetramethylidenebicyclo[2.2.1]heptan-7-one
• Synonyms: Bicyclo(2.2.1)heptan-7-one, 2,3,5,6-tetramethylene-; Bicyclo[2.2.1]heptan-7-one, 2,3,5,6-tetramethylene-
• CAS NO: 106710-59-2
• Molecular Formula: C₁₁H₁₀O
• Molecular Weight: 158.1965
• Mol File: 106710-59-2.mol

Chemical Properties

• Melting Point: 56-57 °C(Solv: pentane (109-66-0))
• Boiling Point: 256.2°C at 760 mmHg
• Flash Point: 103.9°C
• Density: 1.04g/cm³
• Vapor Pressure: 0.0156mmHg at 25°C
• Refractive Index: 1.533
• CAS DataBase Reference: 2,3,5,6-tetramethylidenebicyclo[2.2.1]heptan-7-one(CAS DataBase Reference)
• NIST Chemistry Reference: 2,3,5,6-tetramethylidenebicyclo[2.2.1]heptan-7-one(106710-59-2)
• EPA Substance Registry System: 2,3,5,6-tetramethylidenebicyclo[2.2.1]heptan-7-one(106710-59-2)

Safety Data

• Hazardous Substances Data: 106710-59-2(Hazardous Substances Data)

Upstream product

• 51510-23-7 10-isopropylidene-4-oxatricyclo[5.2.1.02.6]dec-8-ene-3,5-dione 
• 120663-18-5 tetramethyl 7-isopropylidenebicyclo<2.2.1>heptane-2-exo,3-endo,5-exo,6-endo-tetracarboxylate 
• 136846-76-9 exo-2,endo-3,exo-5,endo-6-Tetrakis(hydroxymethyl)-7-norbornanol 
• 82614-21-9 tetramethyl 7-isopropylidenebicyclo<2.2.1>heptane-2-exo,3-exo,5-exo,6-exo-tetracarboxylate 
• 2175-91-9 6,6'-dimethyl fulvene 
• 136846-80-5 2,3,5,6-Tetramethylene-bicyclo[2.2.1]heptan-7-ol 
• 51510-23-7 (1R,2R,6S,7S)-10-Isopropylidene-4-oxatricyclo<5.2.1.0^2,6>non-8-ene-3,5-dione 
• 136846-82-7 (2S,3S,5S,6S)-7-Hydroxy-7-methoxy-bicyclo[2.2.1]heptane-2,3,5,6-tetracarboxylic acid tetramethyl ester 
• 136846-78-1 (1-Ethoxyethyl)-(exo-2,endo-3,exo-5,endo-6-Tetrakis(chlormethyl)-7-norbornyl)-ether 
• 136846-79-2 (1-Ethoxyethyl)-(2,3,5,6-tetramethylen-7-norbornyl)-ether 
• 136846-77-0 exo-2,endo-3,exo-5,endo-6-Tetrakis(chlormethyl)-7-norbornanol 
• 120567-61-5 2,3,5,6-tetramethylidene-7-(2'-methyloxiran-2'-yl)bicyclo<2.2.1>heptan-7-ol 
• 120567-59-1 2,3,5,6-tetramethylidene-7-(propen-2'-yl)bicyclo<2.2.1>heptan-2-ol 
• 120567-60-4 7-(2'-hydroxypropan-2'-yl)-2,3,5,6-tetramethylidenebicyclo<2.2.1>heptan-2-ol 

Relevant articles and documents

Energy Well of Diradicals, III. - 2,3,5,6-Tetramethylene-1,4-cyclohexadiyl

Gasphase thermolysis of ketone 1 leads to title diradical 3, which in the presence of oxygen yields 5 and peroxides.Assuming that the trapping reaction is collision-controlled, from the temperature dependence of the competing processes an activation enthalpy of 23 kcal/mol is derived for the recombination of the diradical.By the same technique starting from 5 the heat of formation of the diradical has been determined, ΔHf0(g) = 100.8 kcal/mol.Key Words: Diradicals / Oxygen trapping / Shock-tube technique / Heats of formation / Heats of hydrogenation

Syntheses and Tandem Diels-Alder Reactivities of 7,7-Diphenylhericene(=7-(Diphenylmethylidene)-2,3,5,6-tetramethylidenebicycloheptane) and 7-Oxahericene(=2,3,5,6-Tetramethylidenebicycloheptan-7-one)

Syntheses of 7,7-diphenylhericene (4) and 7-oxahericene (5) are presented.Rate constants k1 and k2 of the two successive Diels-Alder additions of ethylenetetracarbonitrile (TCE) to 4 and to 5 have been evaluated.At 25 deg C in toluene, the r