Results 301 to 310 of about 173,620 (335)

Reactions of amide anions with α-bromo-amides

J. Chem. Soc., Chem. Commun., 1981
The reactions of α-bromoisobutyramides with the anions from amides and a thioamide afford oxazolidin-4-ones and a thiazolidin-4-one, respectively; these are useful intermediates for preparation of ester derivatives.
G. Cavicchioni, SCRIMIN, PAOLO MARIA, A. C. Veronese, F. D'Angeli   +3 more
openaire   +2 more sources

On the relative strengths of amide…amide and amide…water hydrogen bonds

Chemical Physics Letters, 1991
We have performed Hayes—Stone intermolecular perturbation theory (IMPT) calculations on amide…water and amide…amide complexes in order to estimate the change ΔW in intermolecular interaction energy associated with the hydrogen bond exchange process amide(NH)…water+water…(OC)amide⇔amide(NH)…(OC)amide+water…water.
John B.O. Mitchell, Sarah L. Price
openaire   +1 more source

Reliable Determination of Amidicity in Acyclic Amides and Lactams

The Journal of Organic Chemistry, 2012
Two independent computational methods have been used for determination of amide resonance stabilization and amidicities relative to N,N-dimethylacetamide for a wide range of acyclic and cyclic amides. The first method utilizes carbonyl substitution nitrogen atom replacement (COSNAR).
Stephen A, Glover, Adam A, Rosser
openaire   +2 more sources

Flexible and Chemoselective Oxidation of Amides to α-Keto Amides and α-Hydroxy Amides

Journal of the American Chemical Society, 2017
A suite of flexible and chemoselective methods for the transition-metal-free oxidation of amides to α-keto amides and α-hydroxy amides is presented. These highly valuable motifs are accessed in good to excellent yields and stereoselectivities with high functional group tolerance.
Aurélien de la Torre, Daniel Kaiser, Nuno Maulide   +2 more
openaire   +3 more sources

21.1.8 Synthesis of Amides by Transamidation and Amidation of Activated Amides and Esters

2020
AbstractThis chapter provides a summary of the recent advances in direct transamidation and amidation reactions of activated amides and esters via transition-metal-catalyzed and transition-metal-free C(acyl) —N and C(acyl) —O bond cleavage as a new disconnection for the synthesis of amide bonds.
G. Li, M. Szostak
openaire   +1 more source

Amides

ChemInform, 2005
AbstractFor Abstract see ChemInform Abstract in Full Text.
P. D. Bailey, T. J. Mills, R. Pettecrew, R. A. Price   +3 more
openaire   +1 more source

Amid the dust

2020
“Amidst the Dust” pays homage to the author’s personal experience conducting research for her MA thesis on Italian-American writer John Fante. Her two months spent in Los Angeles—the city where Fante set many of his literary works—were crucial to developing a richer understanding of Fante’s perception of his identity as a son of Italian immigrants. The
openaire   +1 more source

Amides II. Acylation of amides to diacylimines

Recueil des Travaux Chimiques des Pays-Bas, 1948
AbstractThree acylating mechanisms are involved in the reaction between amides and anhydrides. In the aliphatic series all mechanisms are governed by the inductive effects operating in the reactants.Amides act as acids towards anhydrides.Diacylimines and the corresponding anhydrides acylate alcohols by the same mechanism.A new compound ...
J. B. Polya, T. M. Spotswood
openaire   +1 more source

Amides

2022
This chapter discusses enamines. It explains the process of achieving enamine through regaining neutrality by losing a proton adjacent to the iminium moiety. Additionally, these compounds rarely serve as nucleophiles or bases on nitrogen. The chapter discusses the formation of enamines from amine and aldehyde or ketone.
Patrick D. Bailey, Keith M. Morgan
openaire   +1 more source

ChemInform Abstract: STUDIES OF THIO AMIDES AND AMIDES‐ CONVERISON OF THIO AMIDES INTO AMIDES BY TRIMETHYLOXONIUM FLUOROBORATE

Chemischer Informationsdienst, 1977
AbstractKindler‐Reaktion der Säurechloride (I) mit den Aminen (II) ergibt die Amide (IIIa)‐alle), von denen (IIIa) bzw. (IIIb) beim Erhitzen mit P2S5 in die Thioamide (IVa) bzw. (IVb) übergehen.
openaire   +1 more source