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Luche, J. Chem. SOC., Cbem. Commun., 183 (1976). (7) The formation of alkane by dimerization of the alkyl groups attached to the copper was not reported in ref 4-6. Crabbe and c o -~o r k e r s~,~ used dimethyl-and diethyicuprate, in which case ethane and butane could have easily escaped detection. Landor and co-workers4 used di-n-buylcuprate in several reactions but did not report the formation of octane. (8) W H.A synthetically useful one-step procedure for converting a-arylated tertiary n i t r o compounds i n t o highly branched /3-arylated nitroparaffins is described. These reactions appear t o proceed via a chain mechanism in which radical anions a n d free radicals are intermediates.

Carbonates containing an iodinated aromatic ring on one side of the carbonate linkage and an alkyl group on the other were prepared. The aromatic side consisted of p-iodophenyl, p-iodobenzyl, m-iodobenzyl, 3,5-diiodobenzyl, m-amino-2,4,6-triiodobenzyl, m-acetamido-2,4,6-triiodobenzyl, p-iodophenethyl, p-iodo-sec-phenethyl, 3-(p-iodophenyl)propyl, 3-(p-iodophenyl)butyl, 2-(p-iodobenzyl)butyl, and 2-(iodobenzyl)hexyl groups. The alkyl portion of the carbonates was derived from alkyl alcohols containing from two to ten carbon atoms. The approximate lethal dose of intraperitoneal injections ranged from less than 1 ml/kg to more than 15 ml/kg. An investigation into the use of these compounds as radiopaques for myelography, lymphography, bronchography, and salpingography is underway.

p‐Jodphenol (I) wird zu (II) verestert.

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