Two protocols for the combinatorial synthesis of 5-(dialkylamino)tetrazoles were developed. The best success rate (67%) was shown by the method that used primary and secondary amines, 2,2,2-trifluoroethylthiocarbamate, and sodium azide as the starting reagents. The key steps included the formation of unsymmetrical thiourea, subsequent alkylation with 1,3-propane sultone and cyclization with azide anion. A 559-member aminotetrazole library was synthesized by this approach; the overall readily accessible (REAL) chemical space covered by the method exceeded 7 million feasible compounds.

中文翻译：

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5-（二烷基氨基）四唑的一锅平行合成。

开发了5-（二烷基氨基）四唑的组合合成的两种方案。使用伯胺和仲胺，2,2,2-三氟乙基硫代氨基甲酸酯和叠氮化钠作为起始试剂的方法显示出最佳的成功率（67％）。关键步骤包括不对称硫脲的形成，随后与1,3-丙烷磺酸内酯的烷基化以及与叠氮化物阴离子的环化。通过这种方法合成了一个具有559个成员的氨基四唑文库。该方法覆盖的整个易于访问的（REAL）化学空间超过了700万种可行的化合物。