1380396-89-3Relevant articles and documents
Controlled reactions of 2,3-allenoates with a 1,3-diketone catalyst effect
Fang, Zhao,Fu, Chunling,Ma, Shengming
experimental part, p. 2585 - 2596 (2012/06/05)
Two types of reactions of 2,3-allenoates with 1,3-diketones under different reaction conditions are described: under palladium catalysis, the relatively electron-rich C=C bonds are attacked to afford ethyl (2E)-4-acyl-2-alkyl-4-aryl- 6-oxohept-2-enoates exclusively with dicyclohexyl(2,4,6-trimethoxyphenyl) phosphane as the ligand; under Cu(OAc)2 catalysis, 4-[R-C(=O)-]-(LB-Phos) 3,5-dialkyl-3-(2-oxo-2-arylethyl)furan-2(3H)-one products are formed unexpectedly through intramolecular reaction at the electron-deficient C=C bond.