42308-40-7Relevant academic research and scientific papers
Synthesis of E- and Z-o-methoxy-substituted 2,3-diphenyl propenoic acids and its methyl esters
Felfoeldi, Karoly,Sutyinszky, Maria,Nagy, Nora,Palinko, Istvan
, p. 1543 - 1553 (2007/10/03)
A series of stereoisomeric o-methoxy-substituted 2,3-diphenyl propenoic acids and their methyl esters have been synthesized. The E isomers were prepared by a modified Perkin condensation (substituted benzaldehyde, phenylacetic acid, Et3N/acetic anhydride). The difficult to access Z isomers were obtained conveniently in good yields when the appropriate coumarin derivatives were allowed to react with KOH and CH3I in DMSO.
A NEW SYNTHESIS OF COUMESTAN: FORMAL SYNTHESIS OF COUMESTROL METHYL ETHER
Pandit, S. B.,Gadre, S. Y.
, p. 157 - 166 (2007/10/02)
A new route to synthesis of coumestan ring system has been developed and formal synthesis of methyl ether of coumestrol has been achieved.
The Oxidation of (E)-α-Phenylcinnamic Acids with Manganese(III) Acetate
Oishi, Kazuki,Kurosawa, Kazu
, p. 179 - 184 (2007/10/02)
The oxidation of eight (E)-α-phenylcinnamic acids with manganese(III) acetate in boiling acetic acid containing acetic anhydride gave 3-phenylcoumarins, 3-phenyl-1-oxaspirodeca-3,7,9-triene-2,6-diones, 2-phenylbenzofurans, 3-(acetoxymethyl)-2-phenylbenzofurans, 3-formyl-2-phenylbenzofuran, 2-acetoxy-2-phenyl-3(2H)-benzofuranones, (Z)-Α-acetoxystilbenes, 2-acetoxy-1,2-diphenylethanones, 5-acetoxy-4,5-diphenyl-2(5H)-furanones, and diphenylacetylene.Tha reaction pathways are discussed.
