Aerobic oxidative α-arylation of furans with boronic acids via Pd(<scp>ii</scp>)-catalyzed C–C bond cleavage of primary furfuryl alcohols: sustainable access to arylfurans
Aerobic oxidative α-arylation of furans with boronic acids via Pd(II)-catalyzed C–Cbondcleavage of primary furfuryl alcohol provides sustainable access to arylfurans. This α-arylation protocol opens a new avenue for the transformation of readily available furans into other useful compounds.
Gold Catalysis: Efficient 1,3-Induction with Diastereotopic Homopropargyl Alcohols in the Phenol Synthesis
作者:A. Stephen K. Hashmi、Melissa Hamzić、Matthias Rudolph、Martin Ackermann、Frank Rominger
DOI:10.1002/adsc.200900402
日期:2009.10
Furans with diastereotopic alkynyl groups were prepared and then converted to anellated phenols in gold-catalyzed reactions. In all cases a highly diastereoselective reaction was observed. The stereochemical outcome of the 1,3-induction could be assigned by two independent crystal structure analyses, showing a cis-arrangement of the two alkyl substituents on the benzoanellated cyclohexene ring.