Water-promoted defluorinative synthesis of fluoroalkylated 1,5-diazapentadienes by using (NH<sub>4</sub>)<sub>2</sub>CO<sub>3</sub> as an NH<sub>2</sub> and NH source
作者:Wei Han、Yu-Lan Chen、Xi Tang、Jie Zhou、Mengtao Ma、Zhi-Liang Shen、Xue-Qiang Chu
DOI:10.1039/d3gc03717g
日期:——
reaction of fluoroalkyl alkenes has been developed under transition-metal-free conditions. Structurally important fluoroalkylated 1,5-diazapentadienes were obtained in excellent Z-selectivity with good functional group tolerance. The versatility of the method was illustrated in the synthesis of valuable organofluorides from the obtained products. Compared to traditional synthetic methods, several apparent
在无过渡金属条件下,开发了AH 2 O促进和(NH 4 ) 2 CO 3促进的氟代烷基烯烃的脱碘胺化和脱氟亚胺化反应。以优异的Z选择性和良好的官能团耐受性获得了结构重要的氟烷基化 1,5-二氮杂戊二烯。该方法的多功能性在从所得产物合成有价值的有机氟化物中得到了证明。与传统的合成方法相比,可以避免一些明显的限制,包括蒸馏纯化、多步骤操作、苛刻的反应条件、水分排除以及有毒/敏感试剂的使用。该反应成功的关键是使用(NH 4 ) 2 CO 3作为市售、廉价、低毒、高效的NH 2 /NH源和水作为C(sp 3 )–F键断裂发起人。此外,全氟烷基取代基对底物独特的氟效应对于提高反应效率也至关重要。