Stereocontrolled Synthesis of 1, 5-Stereogenic Centers through Three-Carbon Homologation of Boronic Esters

Unsworth, P. J., Leonori, D., & Aggarwal, V. K.

Angewandte Chemie International Edition 53.37 (2014): 9846-9850.

Allylic pinacol boronic esters are stable toward 1,3-borotropic rearrangement. We developed a PdII-mediated isomerization process that gives di- or trisubstituted allylic boronic esters with high E selectivity. The combination of this method with lithiation–borylation enables the synthesis of carbon chains that bear 1,5-stereogenic centers. The utility of this method has been demonstrated in a formal synthesis of (+)‐jasplakinolide.

Stereocontrolled-Synthesis-of-1-5-Stereogenic-Centers-through-Three-Carbon-Homologation-of-Boronic-Esters

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