Bis(1-benzyl-4-aza-1-azoniabicyclo[2.2.2]octane) Peroxodisulfate: A Mild and Efficient Oxidant for Cleavage of Nitrogen Double Bonds and Oxidation of Alcohols under Anhydrous Conditions
Synthesis of Isoquinolines via Rh(III)-Catalyzed C–H Activation Using Hydrazone as a New Oxidizing Directing Group
摘要:
An efficient and mechanistically interesting method for the synthesis of highly substituted isoquinolines by a Rh(III)-catalyzed hydrazone directed ortho C H bond activation and annulation without an external oxidant is described. This reaction is accomplished via a C-C and C-N bond formation along with N-N bond cleavage.
Catalytic Aerobic Oxidative Cleavage of Oximes, Tosylhydrazones and N,N-Dimethylhydrazones to Carbonyl Compounds
作者:Gonzalo Blay、Elisabeth Benach、Isabel Fernández、Sales Galletero、José R. Pedro、Rafael Ruiz
DOI:10.1055/s-2000-6347
日期:——
A new method for the aerobic oxidative cleavage of the C=N double bond of oximes and, tosyl- and N,N-dimethylhydrazones of ketones to yield their corresponding carbonyl compounds, with a Ni(II) complex catalyst, oxygen and pivalaldehyde has been developed.
Manipulatively simple and rapid methods are described for the synthesis of: chiral sulfinate esters from sulfonyl chlorides and sufonic acids; aldehydes and ketones from oximes, alcohols, hydrozones; sulfoxides from sulfides; and disulfides from thiols. The chemical yields are good to excellent and diastereoselectivity is high.
An Easy and Efficient Method for Cleavage of Carbon-Nitrogen Double Bonds Under Non-Aqueous and Neutral Conditions