35279-25-5Relevant academic research and scientific papers
Reaction of alkylcarbonyloxymethyl halides with phenols: reevaluating the influence of steric hindrance
Thomas, Joshua D.,Sloan, Kenneth B.
, p. 8785 - 8787 (2006)
Evidence is presented that contradicts an earlier finding that, in the absence of steric hindrance, the coupling reaction of alkylcarbonyloxymethyl (ACOM) halides with phenols favors acylated product. A one-step synthesis is used to generate sterically unhindered ACOM iodides, which are then reacted with several phenols to give mainly alkylated phenol.
Decarboxylative Acetoxylation of Aliphatic Carboxylic Acids
Senaweera, Sameera,Cartwright, Kaitie C.,Tunge, Jon A.
, p. 12553 - 12561 (2019/10/14)
Organic molecules bearing acetoxy moieties are important functionalities in natural products, drugs, and agricultural chemicals. Synthesis of such molecules via transition metal-catalyzed C-O bond formation can be achieved in the presence of a carefully chosen directing group to alleviate the challenges associated with regioselectivity. An alternative approach is to use ubiquitous carboxylic acids as starting materials and perform a decarboxylative coupling. Herein, we report conditions for a photocatalytic decarboxylative C-O bond formation reaction that provides rapid and facile access to the corresponding acetoxylated products. Mechanistic investigations suggest that the reaction operates via oxidation of the carboxylate followed by rapid decarboxylation and oxidation by Cu(OAc)2
Reaction of α-(n-alkylcarbonyloxy)alkyl (ACOA) halides with 4-hydroxyacetanilide and 2,2,5,7,8-pentamethyl-6-chromanol: The effect of steric hindrance on reaction path
Thomas, Joshua D.,Sloan, Kenneth B.
, p. 272 - 278 (2008/12/22)
A convenient synthesis of α-(n-alkylcarbonyloxy)alkyl (ACOA) iodides has been developed and a homologous series of n-alkylcarbonyloxymethyl (ACOM) iodides have been used to alkylate 4-hydroxyacetanilide (acetaminophen, APAP), a sterically unhindered phenol, and a sterically hindered phenol (2,2,5,7,8-pentamethyl-6-chromanol). Steric hindrance was not a significant factor in the ratio of acylated (Path b) to alkylated (Path a) for these reactions. Given the reported toxicity associated with sterically hindered ACOM prodrugs, n-alkyl ACOM and ACOA promoieties present themselves as viable alternatives to the more commonly used pivalate-based derivatives. Georg Thieme Verlag Stuttgart.
Oxidative Substitution Reactions of Organotin Compounds with Lead Tetra-acetate
Yamamoto, Makoto,Izukawa, Hiroyoshi,Saiki, Masaru,Yamada, Kazutoshi
, p. 560 - 561 (2007/10/02)
A new oxidative substitution reaction where an organotin group is replaced by an acetoxy group has been investigated; this reaction has been successfully applied to the synthesis of 4-ylidenebutenolides.
Metal Ion Oxidation. VIII. Oxidation of Organic Compounds by Copper(III)
Joensson, Lennart
, p. 683 - 690 (2007/10/02)
The copper(III) complex of biuret has been shown to oxidize aromatic and alicyclic compounds in acetic and trifluoroacetic acid, yielding acetates and dehydro dimers.The product pattern of these reactions supports an electron transfer mechanism.Aryl halides, e.g. fluorobenzene, are hydrolyzed to phenols and the mechanism is postulated to be an electron transfer chain mechanism, the SON2 mechanism.Substituted arylacetic acids are decarboxylated when treated with 1 in acetic acid at reflux temperature.This decarboxylation is proposed to be a one-electron process, the rate-determining step being the decomposition of an arylacetic acid-copper(III) complex to a benzylic radical.
