Palladium-Catalyzed Deaminative Cross-Coupling of Alkyl Nitroso Carbamates [0.03%]
钯催化下亚硝基碳酰胺的去氨基交叉偶联反应
Shashwati Paul,Kanaram R Kumawat,M Kevin Brown
Shashwati Paul
A palladium-catalyzed deaminative Heck-type coupling of alkyl nitroso carbamates, prepared from commercially available alkyl amines and aryl bromides, is reported. The reaction leads to the synthesis of di- and tri-substituted alkene produc...
Characterization of C3' Epimerization of the Thioheptose Core in the Biosynthesis of Albomycin δ 2 Catalyzed by the Radical S-Adenosylmethionine Enzyme AbmJ [0.03%]
表征AbmJ（自由基S-腺苷甲硫氨酸酶）催化藻菌素δ2生物合成中噻庚糖核心C3'差向异构化的性质
Houyuan Zhao,Zhang Chen,Joseph L Franklin et al.
Houyuan Zhao et al.
Albomycin δ 2 isolated from species of Streptomyces is an antibiotic notable for its oligopeptidyl thionucleoside structure. Its biosynthesis has garnered significant interest, particularly regarding the formation of its unique d-xylo-thio...
Divergent Transformations of Cobaltacyclobutenes Generated from [2 + 2]-Cycloadditions of Vinylidenes and Alkynes [0.03%]
由乙烯基和炔烃经[2+2]环加成反应生成的钴杂环丁烷的发散转化
Sourish Biswas,Wen Xiu,Abigail Soliven et al.
Sourish Biswas et al.
A cobalt-catalyzed addition of a vinylidene equivalent to an alkyne generates a cobaltacyclobutene intermediate. In the presence of Zn(OTf)2, the metallacycle undergoes a Co-to-Zn transmetallation process to form an organozinc species, amen...
Interplay between the Oxygen Reduction Reaction and Atom Transfer Radical Polymerization with Molecular Cu-Based Catalysts in Water [0.03%]
含铜催化剂水溶液中氧还原反应和分子内原子转移自由基聚合之间的相互作用研究
Phebe H van Langevelde,Katarina Ležaić,Jorge F J Coelho et al.
Phebe H van Langevelde et al.
Determining the relationships between the catalyst structures of Cu-based molecular complexes and their performances in the oxygen reduction reaction (ORR), hydrogen peroxide reduction reaction (HPRR), and electrochemically mediated Atom Tr...
An Integrated 12C/13C Exchange Platform for Accessing Isotopically-Labeled Ketones via Dual Catalytic C-C Bond-Functionalization [0.03%]
一种集成的同位素标记酮类化合物的交换平台通过双重催化C-C键官能化获得
Hui-Qing Geng,Álvaro Velasco-Rubio,Eva Jaramillo-Cassà et al.
Hui-Qing Geng et al.
Herein, we describe an integrated diacylation/acylation platform that formally converts simple ketones into their 13C-labeled homologues. The method relies on the propensity of proaromatic dihydroquinazolinones to generate open-shell specie...
Dual-Activity Mannosyltransferase Phosphorylases in Family 130 of Glycoside Hydrolases [0.03%]
糖基水解酶家族130中的双活性甘露糖转移酶磷酸酶
Simon Ladeveze,Laurence Tarquis,Gianluca Cioci et al.
Simon Ladeveze et al.
We discovered that certain mannoside-active enzymes from family GH130 possess both glycoside phosphorylase (GP) and weak glycosyltransferase (GT) activities. This dual activity was observed only in glycoside phosphorylases acting on β-(1,2...
Diastereoselective Synthesis of cis-α,α'-Disubstituted Cyclic Ethers via Borane-Catalyzed Reductive Cyclization of Diketones [0.03%]
硼烷催化二酮的还原 cyclization 反应中顺式-α,α'- 二取代环醚的非对映选择性合成
Nikolay V Shcherbakov,Nathaniel Potin,Josep Mas-Roselló
Nikolay V Shcherbakov
Cyclic ethers, particularly cis-α,α'-disubstituted tetrahydrofurans (THFs) and tetrahydropyrans (THPs), are prevalent motifs in bioactive compounds. However, efficient stereoselective methods for accessing such motifs remain limited. Here...
Visible Light Promoted Alkenyl C-H Bond Addition to Dienes and Aldehydes for the Synthesis of Frameworks Relevant to Polyketide Natural Products [0.03%]
可见光促进的烯丙基C-H键与二烯和醛的加成反应合成聚酮类天然产物骨架
Shohei Ohno,Ramsey M Goodner,Danielle N Confair et al.
Shohei Ohno et al.
Cp*Co-(III)-catalyzed sequential addition of alkenyl C-(sp2)-H bonds to dienes and aldehydes provides products with two additional C-C σ bonds with the simultaneous introduction of contiguous stereogenic centers with high selectivity. Blue...
Reaction Pathways over ZnZrO2‑Based Catalysts and Catalytic Sorbents [0.03%]
基于ZnZrO2的催化剂和催化吸附剂上的反应路径
Laura Proaño,Jordan Wielang,Christopher W Jones
Laura Proaño
Reactive capture and conversion (RCC) is a process intensification approach that integrates CO2 capture and hydrogenation within a single unit, removing the CO2 purification and storage steps of traditional process flow schemes. This alters...
A Multi-Functional Heterogeneous Biocatalyst for the Oxygen-Free Oxidative Condensation of Primary Alcohols into β‑Hydroxy Acids [0.03%]
一种用于伯醇无氧氧化缩合制备β-羟基酸的多功能杂生物催化剂
Alejandro H Orrego,Idania L López,Daniel Andrés-Sanz et al.
Alejandro H Orrego et al.
Enantiomerically pure β-hydroxy acids are valuable building blocks in polymer and fine chemical industries. However, biosynthetic routes to these compounds are limited by narrow feedstock availability. Here, we report a confined, cell-free...