Designed electron-deficient gold nanoparticles for a room-temperature C<sub>sp3</sub>–C<sub>sp3</sub> coupling reaction
作者:Qiu-Ying Yu、Hui Su、Guang-Yao Zhai、Shi-Nan Zhang、Lu-Han Sun、Jie-Sheng Chen、Xin-Hao Li
DOI:10.1039/d0cc06764d
日期:——
Room-temperature autocleavage of C–Br bonds via electron-deficient Au nanoparticles formed as a result of the rectifying contact with boron-doped carbons.
通过与硼掺杂碳的整流接触形成的电子亏损的金纳米颗粒,实现C–Br键的室温自解裂。
Remote Site‐Selective Asymmetric Protoboration of Unactivated Alkenes Enabled by Bimetallic Relay Catalysis
An orthogonal bimetallicrelay catalytic strategy capable of enantioselectively imbedding a boryl functionality at a remote, less-activated site of aryl alkenes is disclosed. This approach was applicable to unactivated terminal and internal alkenes, as well as a mixture of olefin isomers, thus leading to the corresponding chiral products with a boryl-substituted stereogenic center β to a functional
Here, we have described a new copper-catalyzed 1,2-dicarbonylative cyclization of 4-aryl-1-butenes with unactivated alkylbromides. In this reaction, two carbonyl groups were introduced into the double bond by the insertion of two molecules of carbon monoxide, and four new C−C bonds could be constructed in one reaction. At the same time, the corresponding skeletons of α-tetralones as well as 2,3-d
BiBr<sub>3</sub>‐Mediated Intramolecular Aza‐Prins Cyclization of Aza‐Achmatowicz Rearrangement Products: Asymmetric Total Synthesis of Suaveoline and Sarpagine Alkaloids
An intramolecular Prins cyclization of aza-Achmatowicz rearrangementproducts was developed to construct the versatile 9-azabicyclo[3.3.1]nonane (9-ABN) ring system with a variety of substitution patterns and then applied to the asymmetric total synthesis of six suaveoline and sarpagine alkaloids: macrophylline, suaveoline, norsuaveoline, affinisine, normacusine B and Na-Me-16-epipericyclivine.
开发了 aza-Achmatowicz 重排产物的分子内 Prins 环化,以构建具有多种取代模式的通用 9-氮杂双环[3.3.1]壬烷 (9-ABN) 环系统,然后应用于六种 Suaveoline 和沙帕津生物碱:大茶碱、甜甜碱、去苏甜碱、阿菲尼辛、正马库辛 B 和N a -Me-16-表哌环利文。
Photoredox-catalyzed stereo- and regioselective vicinal fluorosulfonyl-borylation of unsaturated hydrocarbons
There has been considerable research on sulfur(VI) fluorideexchange (SuFEx) chemistry, which is considered to be a next-generation click reaction, and relies on the unique balance between reactivity and stability inherent in high valent organosulfur. The synthetic versatility of the bifunctional handles containing the fluorosulfonyl group presents great synthetic value and opportunity for drug discovery
人们对硫( VI )氟化物交换(SuFEx)化学进行了大量研究,该化学被认为是下一代点击反应,并且依赖于高价有机硫固有的反应性和稳定性之间的独特平衡。含有氟磺酰基的双功能手柄的合成多功能性为药物发现提供了巨大的合成价值和机会。然而,由于其系统不相容性和有限的合成策略,直接光氧化还原催化的氟磺酰基硼化过程仍未被探索且具有挑战性。在此,我们开发了一种连续光催化自由基双官能化策略,用于使用集成的氧化还原活性SO 2 F自由基试剂高效立体选择性合成邻位氟磺酰硼化物(VFSB)。 VFSB作为正交合成子,通过C-B和S( VI )-F键的裂解进行一系列方便的转化,包括卤化、Suzuki偶联、氢化和SuFEX点击反应,这证明了VFSB 部分在骨架连接和药物修饰方面具有巨大的潜力。