20052-60-2Relevant articles and documents
Preparation of 2,2-dimethylchroman-4-ones from 5-alkyl-substituted resorcinols: Microwave-assisted synthesis and theoretical calculations
Morales, Paula,Azofra, Luis Miguel,Cumella, Jose,Hernandez-Folgado, Laura,Roldan, Maria,Alkorta, Ibon,Jagerovic, Nadine
, p. 319 - 332 (2014/03/21)
The influence of different 5-alkyl-substituted resorcinols on the formation of 2,2-dimethylchroman- 4-ones is examined experimentally and theoretically. Structures are fully assigned by means of experimental and theoretical 13C and 1H NMR chemical shifts.
Synthesis of 1-aryl-3-methyl-but-2-en-1-ones intermediates for the synthesis of chromanone derivatives
Vijayalakshmi,Subramanian,Rajendra
, p. 661 - 663 (2007/10/02)
A convenient preparation of hitherto unknown compounds 3a, 4a, 3c, 4b and 4c by Friedel-Crafts reaction of active phenol derivatives and 3,3-dimethylacrylol chloride using anhydrous aluminium iodide as the condensing agent is described.
α, β-Unsaturated N-Acylureas as Useful Intermediates for the Synthesis of Indanones, Chromanones and Coumarins
Ramana, M. M. V.,Kudav, N. A.
, p. 339 - 341 (2007/10/02)
α,β-Unsaturated N-acylureas, viz-N-formamido-2-butenamide (I), N-formamido-3-methyl-2-butenamide (II) and N-formamido-3-phenyl-2-propenamide (III) react with aryl alkyl ethers in the presence of PPA to afford the corresponding crotonophenones and chalcones (IV) at lower temperature and 1-indanones (V) at a higher temperature.Reactions of I and II with phenols in the presence of PPA afford the 4-chromanones (VI), while III gives 3,4-dihydro-4-phenylcoumarins (VII) in excellent yields.