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2002 intermediates intermediates (and their reactions) O 0190 -053Arenediazonium Tetrachlorocuprates(II). Modified Versions of the Meerwein and Sandmeyer Reactions.-A convenient preparative method for synthesizing arenediazonium tetrachlorocuprates (II) is developed. Although these salts are stable in the crystalline state, they decompose in strongly polar media furnishing chloroarenes (III) in excellent yields. Thus, decomposition of cuprates (II) can be regarded as an efficient version of the Sandmeyer reaction. Decomposition of the salts (II) in the presence of unsaturated compounds (IV) affords the corresponding Meerwein products (V). The yields of these chloroarylation products (V) are higher than under usual conditions of the Meerwein reaction. -(OBUSHAK, N. D.; LYAKHOVICH, M. B.; BILAYA, E. E.; Russ. J. Org. Chem. 38 (2002) 1, 38-46; Ivan Franko State Univ., L'viv 290005, Ukraine; EN)

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ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.