CONFIGURATIONAL STABILITY OF ALLENIC ANIONS, uSE OF A VITAMIN D DERIVED CD FRAGMENT AS A STEREOCHEMICAL PROBE AND THE STEREOSELECTIVE SYNTHESIS OF PRECURSORS

Article abstract of DOI:10.1016/S0040-4039(00)88230-1

Metallation (n-BuLi, t-BuOK, THF) followed by quenching (DCl, D2O) of (S)-allenes 4a-c occurs primarily with retention of configuration, whereas that of (R)-allenes 4d-e occurs mainly with inversion; the allenes 4 were prepared from related propargyl alco