Synthesis Of Pyrrole Derivatives Research Articles

Synthesis of Pyrrole Derivatives by Palladium-Catalyzed Cyclization of γ,δ-Unsaturated Ketone O-Pentafluorobenzoyloximes

Abstract Various pyrrole derivatives are synthesized from γ,δ-unsaturated ketone O-pentafluorobenzoyloximes by treatment with catalytic amounts of Pd(PPh3)4 and triethylamine via alkylideneaminopalladium(II) intermediates generated by oxidative addition of the oximes to the Pd(0) complex.

ChemInform Abstract: One‐Pot Synthesis of Pyrrole Derivatives from (E)‐1,4‐Diaryl‐2‐butene‐1,4‐diones.

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.

ChemInform Abstract: Synthesis of Pyrrole Derivatives by the Heck‐Type Cyclization of γ,δ‐Unsaturated Ketone O‐Pentafluorobenzoyloximes.

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.

Synthesis of Pyrrole Derivatives by the Heck-Type Cyclization of γ,δ-Unsaturated Ketone O-Pentafluorobenzoyloximes

Abstract Substituted pyrroles are synthesized from γ,δ-unsaturated ketone O-pentafluorobenzoyloximes by the intramolecular Heck-type amination of the olefinic moiety catalyzed by Pd(PPh3)4.

ChemInform Abstract: Antiaromatic Compounds. Part 28. A Synthesis of Pyrrole Derivatives from Tri‐tert‐butylazete and Isonitriles or Carbon Monoxide.

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.

Synthesis of Pyrrole Derivatives from 5,6-Dihydro-4H-1,2-oxazines via Reductive Deoxygenation by Use of Fe3(CO)12

Abstract α-Bromooximes such as α-bromoacetophenone oxime and ethyl 3-bromo-2-(hydroxyimino)propanoate react with enamines to give 5,6-dihydro-4H-1,2-oxazines in good yields. Dihydro-1,2-oxazine derivatives are also obtained by the reaction of α-bromooximes with vinyl ethers and silyl enol ethers in the presence of Na2CO3. Dihydro-1,2-oxazines can be converted into pyrrole derivatives via reductive deoxygenation by treating with Fe3(CO)12 in moderate to excellent yields. Iron carbonyl complexes other than Fe3(CO)12 are also effective for the pyrrole-forming reaction. The efficiency of the complexes for this reaction decreases in the order: Fe3(CO)12>>Et3NH[HFe3(CO)11]>Fe2(CO)9>>Fe(CO)5. Both of the dihydro-1,2-oxazine- and pyrrole-forming reactions can be carried out in a single flask, giving pyrrole derivatives in good yields.

ChemInform Abstract: A Novel Synthesis of Pyrrole Derivatives.

The enolates, generated from methyl 2-siloxycyclopropanecarboxylates, react with phenyl isothiocyanate (II)/methyl iodide (III) to give adducts which, after desilylation with Bu4N+F-, yield methyl 4,5-dihydro-1H-pyrrole-3-carboxylates.

ChemInform Abstract: A Synthesis of Pyrrole Derivatives from O‐(2‐Hydroxyethyl)‐ketoximes.

AbstractReaction of the oxime (III) with the phosphonium iodide (IV) and subsequent treatment with potassium tert‐butoxide afford 2‐phenylpyrrole (V).

A synthesis of pyrrole derivatives from O-(2-hydroxyethyl)-ketoximes

Acetophenone, cyclohexanone, cycloheptanone, cyclo-octanone, and heptan-4-one were converted, via their O-(2-hydroxyethy)-oximes [(5), (6a), (6b), (6c), and (8)] into the pyrrole derivatives [(2b), (7a), (7b), (7c), and (9), respectively] in satisfactory overally yields.

ChemInform Abstract: A New Synthesis of Pyrrole Derivatives by the Use of Trialkylthiocyclopropenium Ion.

AbstractBei der Behandlung von Trialkylthiocyclopropeniumionen mit HMPT werden in ca. 26% Ausbeute Pyrrolderivate erhalten.

A New Synthesis of Pyrrole Derivatives by the Use of Trialkylthiocyclopropenium Ion

A New Synthesis of Pyrrole Derivatives by the Use of Trialkylthiocyclopropenium Ion

A Synthesis of Pyrrole Derivatives

A Synthesis of Pyrrole Derivatives