80044-00-4

Basic information

• Product Name: Butanoic acid, 2-[(1,3-dihydro-1,1,3,3-tetramethyl-2H-isoindol-2-yl)oxy]-2-methyl-, methyl ester
• CAS NO: 80044-00-4
• Molecular Formula: C18H27NO3
• Molecular Weight: 305.417
• Mol File: 80044-00-4.mol
• Article Data: 3

Chemical Properties

• CAS DataBase Reference: Butanoic acid, 2-[(1,3-dihydro-1,1,3,3-tetramethyl-2H-isoindol-2-yl)oxy]-2-methyl-, methyl ester(CAS DataBase Reference)
• NIST Chemistry Reference: Butanoic acid, 2-[(1,3-dihydro-1,1,3,3-tetramethyl-2H-isoindol-2-yl)oxy]-2-methyl-, methyl ester(80044-00-4)
• EPA Substance Registry System: Butanoic acid, 2-[(1,3-dihydro-1,1,3,3-tetramethyl-2H-isoindol-2-yl)oxy]-2-methyl-, methyl ester(80044-00-4)

Safety Data

• Hazardous Substances Data: 80044-00-4(Hazardous Substances Data)

Upstream product

• 21799-93-9 bis(1-methyl-1-phenylethyl) hyponitrite 
• 80037-90-7 1,1,3,3-tetramethyl-2,3-dihydro-1H-isoindol-2-yloxoyl radical 
• 80-62-6 methacrylic acid methyl ester 
• 927-07-1 tert-butyl peroxypivalate 

Relevant articles and documents

Initiation mechanisms for radical polymerization of methyl methacrylate with tert-butyl peroxypivalate

The reaction of tert-butyl peroxypivalate (2) with methyl methacrylate (3) has been studied by the radical trapping technique employing 1,1,3,3-tetramethyl-2,3-dihydro-1H-isoindol-2-yloxyl (1) as a scavenger. Thermolysis of 2 generated tert-butoxyl, tert-butyl, and methyl radicals in the ratios of 48:50:2 at 60 °C in 3. Both alkyl radicals underwent selective tail addition to 3. tert-Butyl radicals reacted about twice as fast as methyl radicals with 3. The absolute rate constant for addition of tert-butyl radicals to 3 was estimated to be 2.3 x 106 M-1 s-1 at 60 °C. The overall ratio of addition to H abstraction in the reaction of 2 with 3 was 5:1.

Initiation Mechanisms in Radical Polymerizations: Reaction of Cumyloxy Radicals with Methyl Methacrylate and Styrene

Cumyloxy (1-methyl-1-phenylethoxy) radicals have been generated by thermolysis (60 deg C) of dicumyl hyponitrite in methyl methacrylate and styrene.The carbon-centred radicals formed by interaction of cumyloxyl with the respective monomers were trapped as stable adducts of 1,1,3,3-tetramethylisoindolin-2-yloxyl.Extensive hydrogen atom abstraction and methyl radical generation as well as double-bond addition were observed in methyl methacrylate.Styrene underwent only double-bond addition by both cumyloxy and methyl radicals.Some possible implications of these results for polymer structure are discussed.A kinetic study of the decomposition of dicumyl hyponitrite in cyclohexane at various temperatures gave k=7.7*1014exp(-13600/T) s-1 for the rate constant.Rate constants for the addition of cumyloxyl to methyl methacrylate (k ca.2*104 dm3mol-1s-1) and styrene (k ca. 2*105dm3mol-1s-1) at 60 deg C have been estimated