| Abstract
| - Static and dynamic stereochemistry of HP(O)ButAr (Ar = 2-methyl-1-naphthyl) has been studiedby a combination of variable-temperature NMR (1H and 13 P), HPLC, and CD measurements as well as byMM calculations. Two unequally populated stereolabile isomers for each configurational enantiomer havebeen detected and their anticlinal and synclinal structures assigned. All the four species have been physicallyseparated and identified on a cryogenic HPLC enantioselective column at −83 °C. The interconversion barriermeasured by dynamic NMR yields essentially the same value as that measured by dynamic HPLC (14.75 and14.95 kcal mol-1, respectively).
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