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New Results in the Preparative Chemistry of Diazocarbonyl Compounds

โœ Scribed by E. Ried

Publisher
John Wiley and Sons
Year
1966
Tongue
English
Weight
91 KB
Volume
5
Category
Article
ISSN
0044-8249

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โœฆ Synopsis

New Results in the Preparative Chemistry of Diazocarbonyl Compounds

E. Ried, Frankfurt/Main (Germany) Chlorine, bromine, or iodine react with tetrachloro-oquinone diazide ( I ) already at room temperature, with elimination of nitrogen. Two molecules of quinone diazide dimerize by loss of one diazo group to compounds for which structure (2) is proposed.

which are cleaved by acid hydrolysis to o-hydroxyarylhydrazones of 2,3-dioxobutyric esters. In many cases the hydrolysis products can be isolated by coupling of o-quinone diazides with acetoacetic ester.

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