reported to illustrate each sequence. Although apparently more versatile, hydroformylation of alkenes using MW heating is sensitive to the nature of the nucleophiles present in the substrates, evidencing that the conventional heating process cannot be completely replaced by MW irradiation. domino reaction - heterocycles -nucleophilicaddition-cyclization- hemiacetals - Pictet-Spengler reaction
Cp2TiCl2-catalyzed grignard reactions. 2. Reactions with ketones and aldehydes
作者:Fumie Sato、Takamasa Jinbo、Masao Sato
DOI:10.1016/s0040-4039(00)78989-1
日期:1980.1
The reaction of Grignard reagents with ketones or aldehydes in the presence of a catalytic amount of Cp2TiCl2 leads to the corresponding reduction products in high yields. Cp2TiH intermediate was proposed to account for this observation.
Oxalates as Activating Groups for Alcohols in Visible Light Photoredox Catalysis: Formation of Quaternary Centers by Redox-Neutral Fragment Coupling
作者:Christopher C. Nawrat、Christopher R. Jamison、Yuriy Slutskyy、David W. C. MacMillan、Larry E. Overman
DOI:10.1021/jacs.5b07678
日期:2015.9.9
Alkyl oxalates are new bench-stable alcohol-activating groups for radical generation under visiblelightphotoredox conditions. Using these precursors, the first net redox-neutralcoupling of tertiary and secondary alcohols with electron-deficient alkenes is achieved.
The lithiation of primary and secondary dialkylsulfates with an excess of lithium powder in the presence of a catalytic amount of naphthalene (4 mol %) in THF at −78°C leads to the corresponding alkyllithium reagents (1:2 molar ratio) which react with different electrophiles, mainly carbonyl compounds, to yield after hydrolysis, the expected coupling products. This methodology represents an indirect
SYNTHESIS AND APPLICATION OF CHIRAL SUBSTITUTED POLYVINYLPYRROLIDINONES
申请人:Kansas State University Research Foundation
公开号:US20200306737A1
公开(公告)日:2020-10-01
Chiral polyvinylpyrrolidinone (CSPVP), complexes of CSPVP with a core species, such as a metallic nanocluster catalyst, and enantioselective oxidation reactions utilizing such complexes are disclosed. The CSPVP complexes can be used in asymmetric oxidation of diols, enantioselective oxidation of alkenes, and carbon-carbon bond forming reactions, for example. The CSPVP can also be complexed with biomolecules such as proteins, DNA, and RNA, and used as nanocarriers for siRNA or dsRNA delivery.