3718-79-4Relevant academic research and scientific papers
DIENONE-PHENOL REARRANGEMENTS OF BICYCLIC CYKLOHEXA-2,5-DIEN-1-ONES; KINETIC STUDIES OF THE IMPORTANCE OF A MULTISTAGE MECHANISM
Waring, Anthony J.,Zaidi, Javid Hussain,Pilkington, James W.
, p. 935 - 939 (2007/10/02)
Kinetic measurements allow the relative importance of pathways for dienone-phenol rearrangements of two bicyclic cyclohexadienones to be assessed.For 3,4a-dimethyl-5,6,7,8-tetrahydronaphthalen-2(4aH)-one (1) the rearrangement rates in aqueous sulphuric acids were apportioned to three patways.For the analogous 1,4a-dimethyltetrahydronaphthalenone (2) the rates were apportioned to two patways, both of which allow the angular methyl group to migrate to sites meta to the oxygen function.The indirect path for this process, which involves three separate migration steps, is about as fast as the commonly accepted '1,2-migration' of the methyl group.Comparisons are made with the analogous 4a-methyl-, and 4a,8-dimethyl-5,6,7,8-tetrahydronaphtalenones.
NEW SYNTHETIC ROUTES TO Β-POLYKETONE DERIVATIVES: REACTIONS OF 3-ACETYL-2-HYDROXY-6-METHYL-4H-4-PYRANONE AND 7-CHLORO-2,2-DIMETHYL-2H,4H,5H-PYRANO(4,3-D)-1,3-DIOXIN-4,5-DIONE WITH AN ENAMINE (STUDIES ON THE Β-CARBONYL COMPOUNDS CONNECTED WITH THE Β-POLYKE
Takeuchi, Naoki,Nakagawa, Hideo,Kamisato, Masahiro,Tobinaga, Seisho
, p. 2460 - 2467 (2007/10/02)
The reaction of 1-morpholino-1-cyclohexene 2 with 3-acetyl-2-hydroxy-6-methyl-4H-4-pyranone 1 gave a condensation product 3, which was subsequently transformed into the 4-pyrone 4, the β-triketone 10 and the phenol 12.The reaction of 2 with 7-chloro-2,2-d
