Chemoselectivity and regioselectivity pdf
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Science,, Chemoselectivity. Organic lettersA mild, chemoselective, and Regio and Chemoselectivity: Orientation and Reactivity In this section, we will study the orientation (or regio-selectivity) and reactivity (chemo-selectivity) of addition to carbon-carbon multiple bonds Chemoselectivity is a term that describes the ability of a reagent or intermediate to react with one group or atom in a molecule in preference to another group or atom present in the same molecule Chemoselectivity Regioselectivity Stereoselectivity (Which) (Where) (How) Chemoselectivity Preferential selectivity of one functional group over other Two different functional groups and unequal reactivity Reaction of one of two identical functional groups SELECTIVITYScience,, Chemoselectivity. preferential reactivity of one functional group (FG) over anotherChemoselective reduction of C=C over C=O: O H2, Pd/C OChemoselective reduction of C=O over C=C: O NaBHOH O. O NaBH4, CeClOH onlyEpoxidation: OH OH OH starting materials with predictable regioselectivity and stereochemistry. Chemistry. preferential reactivity of one functional group (FG) over anotherChemoselective reduction of C=C A protecting group or protective group is entered into a molecule through chemical modification of a functional group for obtaining the chemoselectivity in a chemical In this Review, we survey recent advances in the catalytic applications of mechanically interlocked molecules organized by the effect of the mechanical bond on key catalytic % chemoselectivity. SELECTIVITYSELECTIVITY. Chemoselectivity refers to selective reactivity of one functional group in the presence of others There are three types of selectivity possible for any synthesis; chemoselectivity, regioselectivity and stereoselectivity. However, this usage is discouragedSee also: regioselectivity, stereoselectivity, stereospecificity Source: PAC,,, A method for the reductive scission of heterocyclic thioethers. T. Graham Wensheng Liu Dong-Ming Shen.