65170-91-4Relevant academic research and scientific papers
Synthesis of β-aryl ketones by tetraphosphine/palladium catalysed Heck reactions of 2- or 3-substituted allylic alcohols with aryl bromides
Berthiol, Florian,Doucet, Henri,Santelli, Maurice
, p. 4372 - 4383 (2007/10/03)
Through the use of [PdCl(C3H5)]2/cis,cis,cis-1,2,3,4-tetrakis(diphenylphosphinomethyl)cyclopentane as a catalyst, a range of aryl bromides undergoes Heck reaction using 2- or 3-subtituted allylic alcohols. With these sterically congested alkenes, the selective formation of β-aryl ketones was observed when appropriate reaction conditions were used. The influence of the functional group on the aryl bromide and of the base on the selectivity is remarkable. With several substrates, much higher selectivities were obtained using NaHCO3 instead of K2CO3 as base. Furthermore, this catalyst can be used at low loading with several substrates.
Phenyl butanones
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, (2008/06/13)
Anti-inflammatory compositions are prepared which comprise a therapeutically effective amount of a compound of the formula STR1 wherein X is CO or CHOH; Y is CO, an oxygen atom or a direct bond; the dotted line represents a double bond which is optionally
