Dielectric constants of dimethyl sulphoxide (DMSO) + Acetophenone, DMSO + 9-Fluorenone, Hexamethylphosphorotriamide, (HMPT) + Acetophenone, HMPT + 9-Fluorenone, and DMSO + HMPT mixtures have been determined from 293.15 K to 398.15 K, over the entire composition range, Calculated deviations from idea
Behaviour of aminoacids and aliphatic aldehydes in dipolar aprotic solvents: Formation of oxazolidinones—behaviour of aminoacids and aliphatic aldehydes in dipolar aprotic solvents
✍ Scribed by F. Orsini; F. Pelizzoni; M. Forte; M. Sisti; G. Bombieri; F. Benetollo
- Book ID
- 112129300
- Publisher
- Journal of Heterocyclic Chemistry
- Year
- 1989
- Tongue
- English
- Weight
- 329 KB
- Volume
- 26
- Category
- Article
- ISSN
- 0022-152X
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## Abstract Rate data are reported for the reactions of 2‐chloro‐5‐nitropyridine **2a**, 2‐chloro‐3‐nitropyridine **2b**, and the corresponding 2‐phenoxy derivatives **2c** with __n__‐butylamine, pyrrolidine and piperidine and **2d** with __n__‐butylamine and pyrrolidine in dimethyl sulfoxide (DMSO
Kinetic studies were carried out on the aminolysis reactions of substituted aliphatic esters in a variety of aprotic solvents. The reaction rate is strongly affected by inductive and steric effects of substituents in the acyl group, rising more than 10 4 -fold from cyanoacetate to trifluoroacetate.