硫 ( VI ) 氟化物交换 (SuFEx) 化学已成为下一代点击反应,旨在快速、模块化地组装功能分子。在这里,我们报告了在两室系统中异位生成三氟甲磺酰氟(CF 3 SO 2 F)气体,并将其用作新的SuFEx手柄来有效合成三氟甲磺酸酯和三氟甲酰胺。这种广泛耐受的方案适用于肽修饰或伸缩到偶联反应中。此外,重新设计带有 S 的 S VI –F 连接器 奥 → 南 NR 取代提供了类似的三氟甲酰亚胺氟化物作为 SuFEx 亲电子试剂,其参与了罕见报道的三氟甲亚胺酯的合成。值得注意的是,实验表明 H 2 O 是实现苯酚与胺基化学选择性三氟甲磺化的关键,这一现象可以通过从头算动力学模拟通过胺的 CF 3 SO 2 F 三氟甲磺酸基化的氢键分子过渡态得到最好的解释。
Catalytic chemo and homoselective ipso-nitration under mild condition
作者:Hassan Sepehrmansourie、Mahmoud Zarei、Mohammad Ali Zolfigol、Sima Kalhor、Hu Shi
DOI:10.1016/j.mcat.2022.112634
日期:2022.10
The described method provides a beneficial and convenient strategy for chemo and homoselective ipso-nitration reaction. In contrast to the previously reported methodologies, acid nitric (HNO3) was not used in the course of the nitration reaction. The presented method was applied for the ipso-nitration of a broad range of compounds (47 samples) under mild conditions.
Decarboxylation with Carbon Monoxide: The Direct Conversion of Carboxylic Acids into Potent Acid Triflate Electrophiles
作者:R. Garrison Kinney、Bruce A. Arndtsen
DOI:10.1002/anie.201814660
日期:2019.4
carboxylic acids into potent acid triflate electrophiles. The reaction involves oxidative carbonylation of carboxylic acids with I2 in the presence of AgOTf, and is postulated to proceed via acyl hypoiodites that react with CO to form acid triflates. Coupling this chemistry with subsequent trapping with arenes offers a mild, room temperature approach to generate ketones directly from broadly available carboxylic
SuFEx-enabled, chemoselective synthesis of triflates, triflamides and triflimidates
作者:Bing-Yu Li、Lauren Voets、Ruben Van Lommel、Fien Hoppenbrouwers、Mercedes Alonso、Steven H. L. Verhelst、Wim M. De Borggraeve、Joachim Demaerel
DOI:10.1039/d1sc06267k
日期:——
Sulfur(VI) Fluoride Exchange (SuFEx) chemistry has emerged as a next-generation click reaction, designed to assemble functional molecules quickly and modularly. Here, we report the ex situ generation of trifluoromethanesulfonyl fluoride (CF3SO2F) gas in a two chamber system, and its use as a new SuFEx handle to efficiently synthesize triflates and triflamides. This broadly tolerated protocol lends
硫 ( VI ) 氟化物交换 (SuFEx) 化学已成为下一代点击反应,旨在快速、模块化地组装功能分子。在这里,我们报告了在两室系统中异位生成三氟甲磺酰氟(CF 3 SO 2 F)气体,并将其用作新的SuFEx手柄来有效合成三氟甲磺酸酯和三氟甲酰胺。这种广泛耐受的方案适用于肽修饰或伸缩到偶联反应中。此外,重新设计带有 S 的 S VI –F 连接器 奥 → 南 NR 取代提供了类似的三氟甲酰亚胺氟化物作为 SuFEx 亲电子试剂,其参与了罕见报道的三氟甲亚胺酯的合成。值得注意的是,实验表明 H 2 O 是实现苯酚与胺基化学选择性三氟甲磺化的关键,这一现象可以通过从头算动力学模拟通过胺的 CF 3 SO 2 F 三氟甲磺酸基化的氢键分子过渡态得到最好的解释。