Superbases for organic synthesis

Superbases for organic synthesis

"LICKOR mixtures of organolithium reagents and bulky potassium alcoholates allow the smooth metalation and subsequent electrophilic substitution of low acidity hydrocarbons, in particular olefm. The allylpotassium intermediates exhibit peculiar conformational preferences which can be exploited in novel stereoselective carbon-carbon linking reactions. A few syntheses of simple natural products i...

Computational Design of Highly Potent Organic Superbases

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CO2 capture systems based on saccharides and organic superbases.

In this report, novel systems, based on highly abundant saccharides, D-mannose, D-glucose, β-cyclodextrin, alginic acid and mannitol, in combination with an organic superbase, tetramethylguanidine (TMG) or 1,8-diazabicyclo[5.4.0]undec-7-ene (DBU), are studied for carbon dioxide capture. With D-mannose and D-glucose, several ratios of equivalents of alcohol groups of saccharide : superbase were ...

Synthesis and characterization of potassium-modified alumina superbases

Gold catalysis for organic synthesis

The past decade has witnessed a remarkable growth in the number of organic reactions that are catalyzed by homogeneous gold complexes. Many of the early reported reactions took advantage of the propensity of gold complexes to serve as excellent catalysts for reactions that proceed through π-activation of carbon–carbon multiple bonds. Subsequently, the reactivity paradigms available for gold com...