60110-37-4Relevant academic research and scientific papers
Visible-Light-Driven Aryl Migration and Cyclization of α-Azido Amides
Liang, Siyu,Wei, Kaijie,Lin, Yajun,Liu, Tuming,Wei, Dian,Han, Bing,Yu, Wei
supporting information, p. 4527 - 4531 (2021/06/28)
This paper reports two new visible-light-promoted radical reactions of α-azido amides. By catalysis of [Ir(ppy)2(dtbbpy)]PF6 with i-Pr2NEt as the reducing agent, N-aryl α-azido tertiary amides were first converted to the corresponding aminyl radicals through reduction of the azido group; the aminyl radicals then underwent N-to-N aryl migration to give α-anilinyl-functionalized amides. α-Azido secondary amides, on the other hand, reacted with the solvent ethanol and i-Pr2NEt to afford the imidazolinone products.
[3 + 2]-Cycloaddition of Azaoxyallyl Cations with 1,2-Benzisoxazoles: A Rapid Entry to Oxazolines
Feng, Juan,Zhao, Ming,Lin, Xuanzi
, p. 9548 - 9560 (2019/08/26)
A novel and efficient [3 + 2] cycloaddition reaction of azaoxyallyl cations and 1,2-benzisoxazoles to give oxazoline derivatives has been developed. The transformation provides a rapid entry to functionalized oxazoline scaffolds under mild and transition-metal-free conditions, which will greatly expand the reaction types of heterocycle chemistry and pave the way for syntheses of bioactive compounds.
Bromo-nitro substitution on a tertiary α carbon - A previously uncharacterized facet of the Kornblum substitution
Leonard, Matthew J.,McKay, Peter G.,Lingham, Anthony R.
, p. 76401 - 76418 (2015/09/22)
Sodium nitrite in dimethylformamide substitutes nitro for bromine alpha to an amide carbonyl in high yield at a tertiary site. Hammett plots show a strongly positive ρ value (+0.67), indicating a negatively-charged transition state, in contrast to the typical SN1/SN2 mechanism domain for Kornblum substitutions. 2015
XtalFluor-E, an efficient coupling reagent for amidation of carboxylic acids
Orliac, Aurélie,Gomez Pardo, Domingo,Bombrun, Agnès,Cossy, Janine
supporting information, p. 902 - 905 (2013/03/29)
Amides were produced from carboxylic acids and amines by using XtalFluor-E as an activator. Even poorly reactive carboxylic acids can be transformed to amides. In addition, optically active amines and/or carboxylic acids were not epimerized/racemized during the process.
NITROGEN-CONTAINING HETEROCYCLIC COMPOUNDS AND METHODS OF MAKING THE SAME
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Page/Page column 6-7, (2012/11/07)
The present invention relates to 7-membered nitrogen-containing heterocyclic compounds and methods of making the same. Using a novel aza-[4+3] cycloaddition reaction, the 7-membered heterocyclic compounds are synthesized by reacting a first reactant and a second reactant. Exemplary first reactants and second reactants include α-halohydroxamates and dienes, respectively.
Generation and reactivity of aza-oxyallyl cationic intermediates: Aza-[4 + 3] cycloaddition reactions for heterocycle synthesis
Jeffrey, Christopher S.,Barnes, Korry L.,Eickhoff, John A.,Carson, Christopher R.
supporting information; experimental part, p. 7688 - 7691 (2011/07/06)
Aza-[4 + 3] cycloadditions of putative aza-oxyallyl cationic intermediates and cyclic dienes are reported. The intermediate is generated by the dehydrohalogenation of α-haloamides. The reaction is general to a variety of α-haloamides and is diastereoselective. Computational and experimental data suggest that an N-alkoxy substituent stabilizes the aza-oxyallyl cationic intermediate.
Electrochemical Studies on Haloamides. Part XII. Electrosynthesis of Oxazolidine-2,4-diones
Casadei, Maria Antonietta,Cesa, Stefania,Inesi, Achille
, p. 5891 - 5900 (2007/10/02)
Electrogenerated bases promote the carboxylation of NH-protic carboxamides bearing a leaving group at the position 2 to give oxazolidine-2,4-diones.The process is believed to involve acid-base reaction with the substrate, carboxylation of its conjugate base to corresponding carbamate and ring-closure following intramolecular SN2 reaction.A variety of oxazolidine-2,4-diones, including clinically used trimethadione and malidone, have been prepared in high to excellent yield, which established the scope and generality of this new ring-forming process.
The Conversion of Phenols to Primary and Secondary Aromatic Amines via a Smiles Rearrangement
Coutts, Ian G. C.,Southcott, Mark R.
, p. 767 - 771 (2007/10/02)
The conversion of phenols to 2-aryloxy-2-methylpropanamides (1) and the Smiles rearrangement of these to N-aryl-2-hydroxy-2-methyl propanamides are described; hydrolysis of the latter compounds yields anilines.The scope and limitations of reaction are discussed.Routes, some involving α-lactams, from phenols to N-substituted derivatives of (1) have been developed.Under the conditions of the Smiles rearrangement these secondary 2-methylpropanamides can form directly anilides, N-alkylanilines, or benzoxazinones.
