Flavanones and Related Compounds. I. The Preparation of Polyhydroxychalcones and -Flavanones
作者:T. A. Geissman、R. O. Clinton
DOI:10.1021/ja01208a051
日期:1946.4
polyhydroxychalcones. Although possessing certain limitations, the most generally suitable methods involve the condensation of a suitably substituted acetophenone and the appropriate benzaldehyde by means of alkali. Most of the compounds describejd here were prepared by this general procedure. The use of Russell’s2 method was found necessary in a few cases. The preparation of certain chalcones containing the 2’-hydroxy-
Amine-effected cyclization of chalcone dihalides to aurones
作者:John A. Donnelly、Geraldine M. Emerson
DOI:10.1016/s0040-4020(01)87903-5
日期:1990.1
aurones was studied using cyclohexylamine and the most representative member of each class of these αβ-disubstituted ketones and α-halogeno chalcones. Overall yields of heterocyclic products were generally poor except from 4'6'-dimethoxy- and 3-nitro- substituted chalcone systems; aurones were obtained in fair yield from the former and in excellent yield from the latter. 22'-Diacetoxychalcone dibromide and