Green, Ivan R.; Hugo, Victor I.; Oosthuisen, Francois J., South African Journal of Chemistry, 1994, vol. 48, # 1/2, p. 15 - 22
作者:Green, Ivan R.、Hugo, Victor I.、Oosthuisen, Francois J.、Eeden, Nestor van、Giles, Robin G. F.
DOI:——
日期:——
Harwood, Laurence M., Journal of the Chemical Society. Perkin transactions I, 1984, # 11, p. 2577 - 2582
作者:Harwood, Laurence M.
DOI:——
日期:——
Trifluoroacetic acid catalysed Claisen rearrangement of 5-allyloxy-2-hydroxybenzoic acid and esters: an efficient synthesis of (±)-mellein
作者:Laurence M. Harwood
DOI:10.1039/c39820001120
日期:——
5-Allyloxy-2-hydroxybenzoicacid (1a) and the esters (1b–f) in refluxing trifluoroaceticacid are smoothly converted into 3,4-dihydro-5,8-dihydroxy-3-methylisocoumarin (3) and the corresponding 4-alkoxycarbonyl 2,3-dihydro-5-hydroxy-2-methylbenzofurans (4a–f)via regioselective Claisenrearrangement to the 6-position of the aromatic nucleus with subsequent acidcatalysed cyclisation.