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J. M. Prokipcak

Bio: J. M. Prokipcak is an academic researcher. The author has contributed to research in topics: Benzophenone & Aryl. The author has an hindex of 1, co-authored 2 publications receiving 10 citations.

Papers
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Journal ArticleDOI
TL;DR: Aryl ketoxime carbonates have been found to undergo decompositions at temperatures ranging from 180-200°C to give carbon dioxide and aryl imino ethers (imidates) as discussed by the authors.
Abstract: Aryl ketoxime carbonates have been found to undergo decompositions at temperatures ranging from 180–200°C to give carbon dioxide and aryl imino ethers (imidates). This pyrolysis could prove to be a...

10 citations

Journal ArticleDOI
TL;DR: Aryl ketoxime carbonates have been found to undergo decompositions at temperatures ranging from 180-200°C to give carbon dioxide and aryl imino ethers (imidates) as discussed by the authors.
Abstract: Aryl ketoxime carbonates have been found to undergo decompositions at temperatures ranging from 180–200°C to give carbon dioxide and aryl imino ethers (imidates). This pyrolysis could prove to be a...

Cited by
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Book ChapterDOI
01 Jan 1991
TL;DR: In this article, the authors deal with activated amides, i.e. salt-like compounds, imino derivatives of carboxylic acids as well as compounds which formally arise by complete esterification or amidation of car boxylic orthoacids.
Abstract: This chapter deals with ’activated amides’, i.e. saltlike compounds, imino derivatives of carboxylic acids as well as compounds which formally arise by complete esterification or amidation of carboxylic orthoacids.

25 citations

Journal ArticleDOI
TL;DR: In this article, oxime carbonates have been synthesised and their potential studied as a new class of radical precursor, and a general synthetic route, avoiding laboratory use of phosgene, was developed Alkyl or aryl 1H-imidazole-1-carboxylates were prepared from the corresponding alcohols and 1,1-carbonyldiimidiazole, then reacted with oximes in the presence of base UV photolyses of oximecarbonates released particular N- and O-centred radicals suitable for spect
Abstract: Oxime carbonates have been synthesised and their potential studied as a new class of radical precursor A general synthetic route, avoiding laboratory use of phosgene, was developed Alkyl or aryl 1H-imidazole-1-carboxylates were prepared from the corresponding alcohols and 1,1-carbonyldiimidazole, then reacted with oximes in the presence of base UV photolyses of oxime carbonates released particular N- and O-centred radicals suitable for spectroscopic examination Spiro-cyclisations of alkoxycarbonyloxyl radicals onto aromatic acceptors and 5-exo cyclisations onto alkene acceptors were studied by EPR spectroscopy EPR data also provided insight to the loss of CO2 from alkoxycarbonyloxyl radicals The conformational preferences of 2-oxo-1,3-dioxolan-4-yl-methyl and related radicals were established Modest yields of cyclic carbonates were obtained from preparative scale photolyses

15 citations

Journal ArticleDOI
TL;DR: In this paper, the direct transformation of various secondary amides into N-arylimidates via mild electrophilic amide activation with trifluoromethanesulfonic anhydride (Tf2O) in the presence of 2-chloropyridine (2-ClPyr) is described.

11 citations

Book ChapterDOI
01 Jan 2019
TL;DR: In this article, the pyrolysis of nitro and nitroso compounds is presented, among which, the most common ones are nitromethanes, various other nitroalkanes, nitrobenzene, and several nitro derivatives of heterocycles.
Abstract: This chapter presents pyrolysis of nitro and nitroso compounds, hydroxylamines, oxyamines, N-alkoxyammonium hydroxide derivatives, oximes and oxime derivatives, amine N-oxides and nitrones, hydrazines and hydrazones, azo, diazo, azoxy derivatives, and azides derivatives. Among the compounds with pyrolysis presented in more detail are nitromethanes, various other nitroalkanes, nitrobenzene, nitroaromatic compounds with additional functionalities, nitro derivatives of heterocycles, several nitroso compounds, amine N-oxides, nitrones, several hydrazines, and hydrazones.

6 citations

Journal ArticleDOI
TL;DR: A new Cu-catalyzed efficient protocol is described for the transformation of oximes to the corresponding carbonate derivatives, providing a synthetically useful process, which tolerates a wide range of functional groups.
Abstract: A new Cu-catalyzed efficient protocol is described for the transformation of oximes to the corresponding carbonate derivatives. Diisopropyl azodicarboxylate acted as a selective new precursor for the synthesis of oxime carbonates in high yields. The O–H bond cleavage and O–C bond formation occur in the presence of a copper catalyst providing a synthetically useful process, which tolerates a wide range of functional groups.

6 citations