Synthesis of 2‐Imino‐1,3,4‐Selenadiazoles
<i>via</i>
Tributylphosphine‐Mediated Annulation of
<i>N</i>
‐Aroyldiazenes with Isoselenocyanates
作者:Zhengyan Huang、Qianqian Zhang、Xiaofei Yi、Zongxiang Zhao、Wenquan Yu、Junbiao Chang
DOI:10.1002/adsc.202100775
日期:2021.11.9
(PBu3)-promoted annulation reaction at room temperature. In this synthetic process, crude less stable N-aroyldiazene intermediates generated by I2-mediated oxidation of hydrazides were used directly in a subsequent annulation reaction to afford the selenadiazole products. The merits of the present synthetic strategy also include absence of transition metals and gram-scale synthesis.
2-亚氨基-1,3,4-硒二唑衍生物可以在室温下通过连续氧化和三丁基膦 (PBu 3 ) 促进的环化反应从酰肼和异硒氰酸酯合成。在该合成过程中,由 I 2 -介导的酰肼氧化产生的较不稳定的粗N-芳酰基二氮中间体直接用于随后的环化反应,以提供硒二唑产物。本合成策略的优点还包括没有过渡金属和克级合成。