Lewis acids catalysed Fries rearrangement of isopropylcresol esters
作者:Robert Martin、Pierre Demerseman
DOI:10.1007/bf00809536
日期:——
MARTIN, ROBERT;DEMERSEMAN, PIERRE, SYNTHESIS,(1989) N, C. 25-28
作者:MARTIN, ROBERT、DEMERSEMAN, PIERRE
DOI:——
日期:——
Titanium Tetrachloride Induced Fries Rearrangement: A New Route to Disubstituted 2′- Hydroxypropiophenones
作者:Robert Martin、Pierre Demerseman
DOI:10.1055/s-1989-27134
日期:——
Fries rearrangement of some dialkylphenyl propionates with titanium tetrachloride proves to be a convenient route to hindered dialkyl 2′-hydroxypropiophenones. The sequential use of soft titanium tetrachloride to perform the Fries rearrangement followed by hard aluminum chloride to achieve the elimination of a protecting tert-butyl group allows the synthesis of some previously unknown 3′,6′- and 5′,6′-dialkyl-2-hydroxypropiophenones.