Catalysts in a relay: A synthetic method for delivering highly substituted isoquinolines has been developed (see scheme; Cp*=C5Me5, DMF=N,N‐dimethylformamide, TEMPO=2,2,6,6‐tetramethylpiperidine‐1‐oxyl). A preliminary mechanistic study showed that the rhodium and copper cooperate synergistically in the multistep sequence.
继电器中的催化剂:已开发出一种用于合成高度取代的异喹啉的合成方法(参见方案; Cp * = C 5 Me 5,DMF = N,N-二甲基甲酰胺,TEMPO = 2,2,6,6-四甲基哌啶-1-氧基)。初步的机理研究表明,铑和铜在多步骤序列中协同协同作用。
Diverse Site-Selective Transformation of Benzylic and Allylic Silyl Ethers via Organocatalytic Oxidation
作者:Shohei Hamada、Kaori Sakamoto、Eri Miyazaki、Elghareeb E. Elboray、Yusuke Kobayashi、Takumi Furuta
DOI:10.1021/acscatal.3c01153
日期:2023.6.16
the electronic properties of silylethers, thus enabling selective oxidation of benzylic and allylic silylethers, despite steric factors. A subsequent one-pot reduction accomplishes the formal deprotection to the corresponding benzylic and allylic alcohols. This catalytic system allows the direct oxidative desymmetrization of bis-benzylic and bis-allylic silylethers to access synthetically useful
Alkene <i>anti</i>-Dihydroxylation with Malonoyl Peroxides
作者:Carla Alamillo-Ferrer、Stuart C. Davidson、Michael J. Rawling、Natalie H. Theodoulou、Matthew Campbell、Philip G. Humphreys、Alan R. Kennedy、Nicholas C. O. Tomkinson
DOI:10.1021/acs.orglett.5b02674
日期:2015.10.16
Malonoyl peroxide 1, prepared in a single step from the commercially available diacid, is an effective reagent for the anti-dihydroxylation of alkenes. Reaction of 1 with an alkene in the presence of acetic acid at 40 degrees C followed by alkaline hydrolysis leads to the corresponding diol (35-92%) with up to 13:1 anti-selectivity. A mechanism consistent with experimental findings is proposed that accounts for the selectivity observed.