Oxalic acid esters

Dimethyl peroxide Diethyl peroxide Di-t-butyl-di-peroxyphthalate Difuroyl peroxide Dibenzoyl peroxide Dimeric ethylidene peroxide Dimeric acetone peroxide Dimeric cyclohexanone peroxide Diozonide of phorone Dimethyl ketone peroxide Ethyl hydroperoxide Ethylene ozonide Hydroxymethyl methyl peroxide Hydroxymethyl hydroperoxide 1-Hydroxyethyl ethyl peroxide 1 -Hydroperoxy-1 -acetoxycyclodecan-6-one Isopropyl percarbonate Isopropyl hydroperoxide Methyl ethyl ketone peroxide Methyl hydroperoxide Methyl ethyl peroxide Monoperoxy succinic acid Nonanoyl peroxide (75% hydrocarbon solution) 1-Naphthoyl peroxide Oxalic acid ester of t-butyl hydroperoxide Ozonide of maleic anhydride Phenylhydrazone hydroperoxide Polymeric butadiene peroxide Polymeric isoprene peroxide Polymeric dimethylbutadiene peroxide Polymeric peroxides of methacrylic acid esters and styrene... 

Refs l)Beil-not found 2)R.Criegee H. Dietrich,Ann 560,138(1948) CA 43,6189(1949) tert-Butylhydroperoxide, Oxalic Acid Ester(no... 

The reactivity of the a-methylene group in lactams allows Claisen condensation with esters of formic, oxalic, and arylcarboxylic acids. Treatment of ethyl formate with A-methylpiperidone, followed by acidification, yields a salt of 1 -methyl- J2-piperideine, whereas in an alkaline medium its dimer was isolated.34- 158 With oxalic acid ester as the condensing reagent, 1-methyl-J2-pyrroline-2-carboxylic acid159 and l-methyl-d2-piperideine-2-carboxylic acid160 were obtained (Scheme 4). 

Esters of this constitution include di(hydroxyethyl)-oxamide dinitrate [107] and di-(/S,y-dihydroxypropyl)-oxamide tetranitrate. The latter was first prepared by Domanski and Skudrzyk [103] by heating an oxalic acid ester with dihydroxy-propylamine to form an amide which was then nitrated, as shown below ... 

The luminescent decomposition of certain oxalic acid esters (Fig. 9) in the presence of hydrogen peroxide and fluorescent sensitizers represents one of the most efficient nonbiological light-producing reactions (Rl, R2). The two most commonly used esters are shown in Fig. 45. As diagnostic agents, oxalate esters... 

Despite their high chemiluminescence efficiency, aromatic oxalic acid esters do have some disadvantages. At high levels of ester, there is some background emission (C9). They are also relatively insoluble in water, which means they are applicable only in situations in which organic solvents or water/solvent mixtures can be tolerated. A novel way of overcoming this problem is to have solid ester (e.g., TCPO) incorporated into the matrix of the immobile phase and allow it to slowly dissolve and leach out in the solvent stream, i.e., aqueous acetonitrile or aqueous methanol (P13, V8). 

Oxalic acid esters. Anhydrous oxalic acid refluxed with -heptanol and p-toluene-sulfonyl chloride as catalyst in benzene with azeotropic water entrainment > di- -heptyl oxalate. Y 91%. F. e. s. P. P. Rodionov, V. M. Nakonechnaya, and A. P. Yarkova, Izv. Vyssh. Ucheb. Zaved., Khim. Khim. Tekhnol. 11, 615 (1968) C. A. 69,76571. 

Figure 14.1 Synthesis of EDOT from oxalic acid ester and thiodiacetic acid ester...

Cyclic carbonic from cyclic oxalic acid esters... 

Cyanoformic from mixed oxalic acid esters GOOR GN... 

Reaction of oxalic acid esters with 2-pyrrolidones s. 16, 801... 

Frankland 1863. Frankland [9] was more successful when he investigated the reaction of diethylzinc with ethyl oxalate. He isolated the ester of an acid which had the same molecular formula as leucic acid , 2-hydroxyhexanoic acid. Apparently only one of the reactive sites of the oxalic acid ester was attacked by the organometallic reagent ... 

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