An interesting procedure for the zinc-catalyzed oxidative transformation of ready available 2-aminobenzamide, 2-aminobenzenesulfonamide with benzyl alcohols has been developed. Various quinazolinones and benzothiadiazine 1,1-dioxides were prepared in moderate to good yields under identical conditions. The reactions of both aromatic aldehydes and aliphatic aldehydes with 2-aminobenzamide under catalyst free conditions were described as well. In water media, the products were formed in good yields.
The influence of a 2-pyridinyl substituent on the catalytic performance of aryliodide as a catalyst in iodine(III) chemistry was explored. An efficient Lews-base adduct between the pyridine nitrogen and the electrophilic iodine(III) center was identified and confirmed by X-ray analysis. This arrangement was shown to generate a kinetically competent superior catalyst structure for the catalytic dioxygenation of alkenes. It introduces the concept of Lewis-base adduct formation as a kinetic factor in iodine(I/III) catalysis.
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