Wittig Rearrangement of Lithiated Allyl Aryl Ethers: A Mechanistic Study
作者:Sven Strunk、Manfred Schlosser
DOI:10.1002/ejoc.200600304
日期:2006.10
A -75 DegC, alpha-lithiated allyl Ph ether undergoes mainly the Wittigrearrangement to afford, after acidic hydrolysis, 1-phenyl-2-propen-1-ol as the main product. A second metalation taking place at one of the ortho positions is the sole competing side reaction. Both, the significant decrease of the isomerization rate upon the introduction of a tert-Bu substituent in the para position of the arom