Synthesis and Aminomethylation of 3-Substituted 6-Hydroxy-1,2-Benzisoxazoles
作者:M. S. Frasinyuk
DOI:10.1007/s10593-014-1631-z
日期:2015.2
Oximes of 2,4-dihydroxybenzophenones, 1-(2,4-dihydroxyphenyl)-2-phenylethanones, and 1-(2,4-di-hydroxyphenyl)-2-phenoxyethanones were dehydrated with 1,1'-carbonyldiimidazole, yielding 3-substi-tuted 6-hydroxy-1,2-benzisoxazoles, aminomethylation reactions of which were studied with various reagents.
Mild, calcium catalysed Beckmann rearrangements
作者:H. J. Kiely-Collins、I. Sechi、P. E. Brennan、M. G. McLaughlin
DOI:10.1039/c7cc09491d
日期:——
A mild calcium catalysed Beckmann rearrangement has been realised, which forgoes the more traditional harsh reactions conditions associated with the transformation. The catalyst system is shown to be tolerant towards a wide variety of functional groups relevant to natural product synthesis and medicinal chemistry and the synthetic utility of the reaction has also been investigated. A preliminary mechanistic