54874-23-6Relevant articles and documents
β,β-dimethylacrylophenones : BF3.ET2O-POCl3 catalysed acylation of phenols using β, β-dimethylacrylic acid
Jain, Niveta,Krishnamurty
, p. 1237 - 1241 (2007/10/03)
Boron trifluoride etherate - phosphoryl chloride reagent is a useful reagent for the condensation between phenols and β,β-dimethylacrylic acid. The main products are acrylophenones. But surprisingly hydroquinone gives mono and diacrylates.
On the synthesis of substituted 2,2-dimethyl1-4-chromanones and related compounds
Seboek, Peter,Jekoe, Jozsef,Timar, Tibor,Jaszberenyi, Joseph Cs.
, p. 2791 - 2794 (2007/10/02)
A systematic study of the reaction of a series of monosubstituted phenols 3 and 3-methylbut-2-enoic acid 4 in phosphorus oxychloride/zinc chloride revealed that the formation of 4-chromanones was strongly infuenced by the substituents and their position on the aromatic ring of the starting phenols.
Studies of Chromenes. Part 6. 3-Hydroxymethyl- and 3-Formylprecocenes: Potential Precursors of Other 3-Substituted Precocenes.
Brown, Philip E.,Islam, Qamrul
, p. 1634 - 1651 (2007/10/02)
3-Hydroxymethylene-7- (and -6,7-di)methoxy-2,2-dimethylchroman-4-ones are reduced to diols from which 3-hydroxymethylchromenes may be obtained.Sodium borohydride reduction of the corresponding 3-chloromethylenechromanones, themselves readily prepared by the action of thionyl chloride on the hydroxymethylene derivatives, gives the 3-formylchromenes.Both chromene derivatives offer access to a range of 3-substituted precocenes.
