Current Organic Chemistry - Volume 7, Issue 9, 2003

Linear solvation energy relationship, LSER, and theoretical linear solvation energy relationship, TLSER, formalisms are applied to the analysis of solvent effects on singlet oxygen reactions. Treatments allow quantitative evaluation of solvent effects and are powerful tools for interpreting the mechanism of the process.Both formalisms are applied to several amino derivatives, where for all types of solvents there is a single patt Read More

In this review some results are reported that allow the acetal group of α,β-unsaturated carbonyl derivatives to be considered not simply a protective function but also a synthetic tool for transforming aldehydes (and ketones) into a cheap and easily accessible starting material for the construction of various and more complex structures. The reported results can be grouped into three main sections: α,β-unsaturated as Read More

Regio- and stereoselective synthesis of oligosaccharides with unprotected or lightly protected gluco-, manno-, and rhamnose as glycosyl acceptors was achieved via sugar orthoester formation-rearrangement. α-(1→6)- Linked mannose oligosaccharides, β-(1→6)-linked glucose oligosaccahrides, and 3,6-branched mannose and glucose oligosaccharides were conveniently synthesized with quite simplified procedure. Biologically im Read More

This review covers literature on non-stabilized functionalized organolithium compounds since 1997. In this overview, we consider intermediates with different separation between the functional group and the carbonlithium bond (dn-reagents) and having different hybridization at the carbanionic centre. Special emphasis is given to the synthetic applications of these intermediates in order to prepare polyfunctionalized molecules.