1874-23-3Relevant articles and documents
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Freure,Johnson
, p. 1142 (1931)
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A New Process for the Total Synthesis of Sparstolonin B
Tang, Xiaohang,Tong, Le,Yao, Mengyi,Liang, Qiaoli,Wang, Xiaolong,Yu, Haitao
, p. 1187 - 1190 (2017/06/13)
A novel and simple route was developed that gives sparstolonin B in high yields from affordable commercial compounds. A Diels-Alder strategy was used for the facile construction of the multisubstituted diphenyl ether. The xanthenone segment was obtained by cyclization in an intramolecular Friedel-Crafts reaction, followed by selective reduction of a ketone group and a transformation from a hydroxy group into a cyano group. The final part of the lactone was directly derived by the reduction of the cyano group with Raney nickel.
Continuous flow oxidation of alcohols and aldehydes utilizing bleach and catalytic tetrabutylammonium bromide
Leduc, Andrew B.,Jamison, Timothy F.
supporting information; experimental part, p. 1082 - 1089 (2012/08/27)
We report a method for the oxidation of a range of alcohols and aldehydes utilizing a simple flow system of alcohols in EtOAc with a stream of 12.5% NaOCl and catalytic Bu4NBr. Secondary alcohols are oxidized to ketones, aldehydes are oxidized directly to methyl esters in the presence of methanol, and benzylic alcohols are oxidized to either benzaldehydes or methyl esters, depending on the conditions used. The reaction conditions are mild and generally provide complete conversion in 5-30 min.