Synthesis of fused tetrazole- and imidazole derivatives via iodocyclization
作者:Fredrik Ek、Lars-Göran Wistrand、Torbjörn Frejd
DOI:10.1016/s0040-4020(03)00818-4
日期:2003.8
The possibility to prepare fused tetrazole- and imidazole derivatives by iodocyclization in moderate to excellent yields is demonstrated. In some examples the cyclizations were not following Baldwin's rules entirely, i.e. exo-selectivity. Nucleophilic substitution of the formed iodides gave different results depending on the hardness of the nucleophile. Thus, elimination of the iodide could be a problem