Nitroso compounds Q 0105Synthesis of o-Nitrosoacylbenzenes from o-Nitrobenzyl Alcohols and Their Derivatives. -A two-step synthesis of o-nitrosoacylbenzenes involves nitration of benzylic alcohols to afford o-nitrobenzylic alcohols followed by acid-catalyzed rearrangement. In most cases, the nitration yields a mixture of products with low regio-and chemoselectivity [cf. reaction of (I) and (XI)]. Better results are achieved in the nitration of benzylic acetates like (VII). It is shown that o-nitrobenzylic alcohols, e.g. (XIII), as well as their acetates, e.g. (VIII) and nitrates, e.g. (XII), undergo the rearrangement to furnish the target nitrosoacylbenzenes. -(GAZZAEVA, R. A.; FEDOTOV, A. N.; TROFIMOVA, E. V.; POPOVA, O. A.; MOCHALOV, S. S.; ZEFIROV, N. S.; Russ.
Das Dithiobenzoat‐Anion in Form des Salzes (I) reagiert mit den aktivierten Alkinen (II) bzw. (IV) in einer 3 + 2‐Cycloadditionsreaktion zu den 1,3‐Dithiolen (III) bzw. (V).
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