56721-39-2Relevant academic research and scientific papers
Palladium-catalyzed reduction of acid chlorides to aldehydes with hydrosilanes
Fujihara, Tetsuaki,Cong, Cong,Iwai, Tomohiro,Terao, Jun,Tsuji, Yasushi
supporting information, p. 2389 - 2392 (2013/07/19)
An efficient synthesis of aldehydes from acid chlorides with hydrosilanes as a reducing agent in the presence of a palladium catalyst has been achieved. A simple mixture of commercially available Pd(dba)2 and Mes 3P as a catalyst realized the reduction of various acid chlorides including aliphatic acid chlorides and a, P-unsaturated acid chlorides to the corresponding aldehydes in good to high yields under mild reaction conditions. Georg Thieme Verlag Stuttgart ? New York.
Photochemistry of nonconjugated diketones: internal self-quenching and energy transfer
Wagner, Peter J.,Frerking, Harlan W. Jr.
, p. 2047 - 2061 (2007/10/03)
The triplet state behavior of nine α,ο-dibenzoylalkanes indicates the occurrence of a rapid quenching interaction between the two carbonyl groups.This quenching is fastest (k=3E7 s-1) in dibenzoylbutane, is slightly slower (ca.E7 s-1) in dibenzoylethane, dibenzoylpentane, and 2,2-dibenzoylpropane, but is absent in 1,3-dibenzoylpropane.It also occurs in several "mixed" 1,4-diaroylbutanes incorporating p-ethylbenzoyl or p-methoxybenzoyl chromophores.This internal self-quenching is interpreted as the intramolecular counterpart of the well-know bimolecular self-quenching of aryl ketones, although no exact mechanism can be proposed.Such internal quenching does not occur as rapidly, if at all, in three "turned around" diketones: δ-(p-acetylphenyl)valerophenone, δ-(p-acetylphenoxy)valerophenone, and γ-(p-acetylphenoxy)butyrophenone.This fact, together with the varying rates of internal self-quenching in the dibenzoylalkanes, indicates the necessity for a very specific and close orientation of the two carbonyl groups for self-quenching.In the mixed diketones containing a p-alkylbenzoyl group, triplet excitation appears to be fully equilibrated between the two chromophores.However, in those containing a p-methoxybenzoyl group, excitation does not fully equilibrate before triplet decay, as evidenced by different quenching efficiencies for products from the two carbonyls.Analysis indicates intramolecular energy transfer rate constants -1.These are sufficiently lower than in other bichromophoric systems to suggest relatively slow energy hopping in the polymers of phenyl vinyl ketone.Key words: nonconjugated diketones, dibenzoylalkanes, sefl-quenching, energy transfer, triplet ketones.
Aspects of Tautomerism: Part X - Neighbouring Group Effects on the Structure and Reactivity Patterns of Acid Chlorides
Bhatt, M. Vivekananda,El Ashry, Shaker H.,Somayaji, Vishwanatha
, p. 473 - 486 (2007/10/02)
The influence of neighbouring groups on the structure and reactivity patterns of over one hundred acid chlorides derived from γ- and δ-keto acids, 1,2- and 1,3-dicarboxylic acid half-esters and diacid chlorides have been examined.Contrary to reports in the literature, text books and monographs, evidence has been obtained for the non-existence of tautomerism between the isomeric pairs of either acid chlorides or half-ester acid chlorides.ce.
Ferrocene compounds and preparation
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, (2008/06/13)
There are described compounds of formula I, SPC1 in which R is alkyl, chlorine, bromine, phenyl, or phenyl substituted by one or more halogen or alkyl groups, One of X and Y is group --CO--, --CHOH-- or --CH2 -- and the other is an exocyclic ca
