33574-08-2Relevant academic research and scientific papers
Aerobic oxidation of alcohols on Au/TiO2 catalyst: New insights on the role of active sites in the oxidation of primary and secondary alcohols
Vindigni, Floriana,Dughera, Stefano,Armigliato, Francesco,Chiorino, Anna
, p. 391 - 403 (2016/02/16)
A study of secondary, benzylic, and primary alcohols oxidation on a reference Au/TiO2 catalyst is reported. Reactions gave rise to ketones, aldehydes, or esters in good yields. The FT-IR results and catalytic tests data provide to elucidate the reaction mechanism and the specific role of the active sites on titania.
THE SYNTHESIS, CHARACTERISATION AND REACTIVITY OF SOME LEAD(IV) CARBOXYLATES
Buston, Jonathan E. H.,Coop, Andrew,Keady, Richard,Moloney, Mark G.,Thompson, Russell M.
, p. 1101 - 1116 (2007/10/02)
A detailed examination of the preparation, characterisation and reactivity of a range of lead(IV) carboxylates is reported.The replacement of the acetate ligands of lead(IV) tetraacetate by other carboxylates gives the lead(IV) tetracarboxylates 1-16, which have usually been found to be more stable than lead tetraacetate with respect to hydrolysis.These compounds react with allyltributylstannane to give high yields of the corresponding allyl esters 20-34 under mild conditions.
Photochemistry of α-Aryl Carboxylic Anhydrides. Part 4. Photoreactions of Some Asymmetrical Anhydrides derived from o- and p-Methoxyphenylacetic Acid, and of Some of the Phenylacetate Ester Photoproducts
Roof, Antonius A. M.,Woerden, Hendrik F. van,Cerfontain, Hans
, p. 838 - 841 (2007/10/02)
Irradiation of the two asymmetrical carboxylic anhydrides R1C6H4CH2.CO.O.CO.CH2C6H5 (1a and 1b) at 254 nm in acetonitrile leads to the formation of esters and bibenzyls.Among the esters produced, the asymmetrical ones with structure R1C6H4CH2.O(C=O)CH2C6H5 are the most abundant.These are for the greater part formed intramolecularly by decarbonylation of one excited anhydride molecule.This result is in line with a mechanism involving electron transfer after excitation of the anhydride molecule.The bibenzyls are formed by the recombination of benzyl radicals.In the initial stage of the reaction of the anhydrides, the three bibenzyls are formed with the asymmetrical one predominating .In the later stages, when substantial amounts of esters are present, the formation of the bibenzyls also originates in part from the photodecomposition of the esters.The photochemistry of the various (symmetrical and asymmetrical) esters which are photoproducts from the anhydrides (1a and b) has also been studied.The symmetrical esters (2a and b) afforded quantitatively the bibenzyls (3a and b), respectively.The asymmetrical esters gave variable yields of the three (possible) bibenzyls, depending on the type of ester considered.For the asymmetrical esters for which bibenzyl formation could be quenched by (Z)-piperylene, the three bibenzyls were formed in a close to statistical ratio, e.g. (2c) yielded the bibenzyls (3a, c, and e) in a ratio of 1:2.5:1.With the esters for which the photodecarboxylation was not quenchable by (Z)-piperylene, a relatively higher yield of the asymmetrical bibenzyl was found, e.g. (2d) yielded the bibenzyls (3b, d, and e) in a ratio of 1:6:1.These results are rationalized in terms of a recombination of free radicals resulting from the triplet excited esters after spin inversion in the former case, and a recombination of a radical pair in the solvent cage resulting from the singlet excited or shortlived triplet excited ester in the latter case.
