126516-71-0Relevant academic research and scientific papers
The EPR D-parameter of 1,3-diarylcyclopentane-1,3-diyl triplet diradicals as a probe for steric substituent effects in benzyl-type radicals
Adam, Waldemar,Van Barneveld, Claus,Gerke, Jan-Stefan,Klaerner, Frank Gerrit
, p. 2723 - 2728 (2007/10/03)
The zero-field splitting D parameter of a set of ortho-substituted-1,3-diarylcyclopentane-1,3-diyl triplet diradicals 3 has been determined by EPR spectroscopy in a 2-methyltetrahydrofuran glass matrix at 77 K. While for meta- and para-substituted triplet
Convenient, High-Yield Method for the Methylation of 1,3-Diketones
Choudhary, Anil,Baumstark, Alfons L.
, p. 688 - 690 (2007/10/02)
A general method for the facile dimethylation of 1,3-diketones is presented.The method involves the use of readily available, inexpensive reagents and is carried out under mild conditions.Monomethylation may be carried out by slight modification (simplification) of the procedure.Several examples are presented which show that the method is applicable to alkylations with primary halides as well.Isolated yields for monoalkylation are approximately 95percent while those for dialkylation are ca. 90percent.Alkylation is taking place by the reaction of the enolates of 1,3-diketones with alkyl halides.
