A bridged tetrahydrophosphole ylide derived from 9-phenylphosphabicyclo[4.2.1]nonane: a reagent for E-selective Wittig reactions
作者:E. Vedejs、M. J. Peterson
DOI:10.1021/jo00060a001
日期:1993.4
The bicyclic ylide 4 reacts with aldehydes to afford the E-alkenes. Selectivity is 94-6% E for unbranched aldehydes, but the selectivity decreases with increasing alpha-branching. Ylide 4 is the first E-selective, nonstabilized ylide that allows efficient utilization of the P-alkyl substituent.
Chemo- and regioselective reductive transposition of allylic alcohol derivatives <i>via</i> iridium or rhodium catalysis
作者:Rylan J. Lundgren、Bryce N. Thomas
DOI:10.1039/c5cc07993d
日期:——
The selective, catalytic deoxygenation of alcohols remains a persistent challenge in organic synthesis. Pd-catalyzed formate reduction and diazene-mediated reductivetransposition are both valuable strategies for the selective deoxygenation of allylic...