碳化硅中的钾盐,在碳烟气中泄漏环己醇,Sinne der Hofer -und Moest的Sak Reaktion;aus ihm bilden sichsekundärCyclohexen undDi-cyclohexyl-äther,durch Wasserabspaltung aus einer order aus zwei Molekeln; 环己碳酸酯-环己酯 Cyclohexanon durch氧化和CyclohexanonFettsäurenals Abbauprodukte。
A Multicatalyst System for the One‐Pot Desymmetrization/Oxidation of
<i>meso</i>
‐1,2‐Alkane Diols
作者:Christian E. Müller、Radim Hrdina、Raffael C. Wende、Peter R. Schreiner
DOI:10.1002/chem.201100498
日期:2011.5.27
Two is better than one: We demonstrate the viability of an organocatalytic reaction sequence along a short peptide backbone that carries two independent catalytic functionalities, which allow the rapid, one‐pot acylative desymmetrization and oxidation of meso‐alkane‐1,2‐diols to the corresponding acetylated acetoins with good yields and enantioselectivities (see scheme).
Triflic Acid Catalyzed Oxidative Lactonization and Diacetoxylation of Alkenes Using Peroxyacids as Oxidants
作者:Yan-Biao Kang、Lutz H. Gade
DOI:10.1021/jo202491y
日期:2012.2.3
A clean and efficient diacetoxylation reaction of alkenes catalyzed by triflic acid using commercially available peroxyacids as the oxidants has been developed. This method was also applied in oxidative lactonizations of unsaturated carboxylic acids in good to high yields.
Aerobic Oxidation of Alkenes to Esters of Vicinal Diols with a<i>syn</i>-Configuration Catalyzed by I<sub>2</sub>and the H<sub>5</sub>PV<sub>2</sub>Mo<sub>10</sub>O<sub>40</sub>Polyoxometalate
作者:Ronny Neumann、Olena Branytska
DOI:10.1055/s-2005-917069
日期:——
A new method for the synthesis of vicinal diols fromalkenes has been developed. Reaction of molecular iodine in the presence of a polyoxometalate as oxidation catalyst under aerobic conditions in acetic acid solvent leads to the oxidative iodoacetoxylation of an alkene, i.e. formation of a 1,2-iodoacetate. Further in situ substitution of the iodide by water yields the 1,2-diol monoacetate with a predominantly
A One-Step Procedure for the Monoacylation of Symmetrical 1,2-Diols
作者:Paul A. Clarke、Nadim E. Kayaleh、Martin A. Smith、James R. Baker、Stephan J. Bird、Chuen Chan
DOI:10.1021/jo0257041
日期:2002.7.1
A series of lanthanide (III) salts have been shown to catalyze the monoacylation of symmetrical 1,2-diols by carboxylic acid anhydrides with surprisingly high selectivity.