(10) Zefirov, NS; Zhdankin, VV; Dan'kov, Yu. V.; Koz'min, AS; Chizhov, 0. SJ Org. Chem. USSR (Engl. Transl.) 1986, 21, 2252. the reaction mixtures often fading significantly as the iodine reagent was consumed. Reactions were also conducted in dichloromethane or acetonitrile at room temperature (Table I, entries 5-7) and were monitored by noting the gradual disappearance of crystalline 4. The workup procedure was dictated by the ...