𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Polar Substituent Effects on Rates and Equilibria of 4-Substituted Quinuclidines. Preliminary communication

✍ Scribed by Cyril A. Grob; Markus G. Schlageter

Publisher
John Wiley and Sons
Year
1974
Tongue
German
Weight
126 KB
Volume
57
Category
Article
ISSN
0018-019X

No coin nor oath required. For personal study only.

📜 SIMILAR VOLUMES

A Reexamination of Inductive Substituent
A Reexamination of Inductive Substituent Constants Derived from pKa Values of 4-Substituted Quinuclidines. Polar effects. Part VIII
✍ Cyril A. Grob; Bruno Schaub; Markus G. Schlageter 📂 Article 📅 1980 🏛 John Wiley and Sons 🌐 German ⚖ 315 KB

## Abstract p__K__~a~ Values of 42 quinuclidinium perchlorates I have been measured in 0.1 M aqueous KCl‐solution. In a few cases small corrections of earlier thermodynamic p__K__~a~ values are indicated. These measurements, in conjunction with recent X‐ray structure determinations, confirm the rel

Nucleophilicity and Basicity in the Quat
Nucleophilicity and Basicity in the Quaternization of 4-Substituted Quinuclidines. Polar effects. Part III
✍ Cyril A. Grob; Markus G. Schlageter 📂 Article 📅 1977 🏛 John Wiley and Sons 🌐 German ⚖ 365 KB 👁 1 views

## Abstract The second order rate constants (__k__) for quaternization of thirty 4‐substituted quinuclidines (**1**) by methyl iodide in methanol have been measured. The effects of the substituents on rate are relatively small and indicate an early transition state with little charge separation. Th

Effect of Substituents and of Wavelength
Effect of Substituents and of Wavelength of Irradiation on the Photo-Fries-Rearrangement of Enol-Esters Preliminary Communication
✍ Dan Veierov; Tuvia Bercovici; Ernst Fischer; Yehuda Mazur; Amnon Yogev 📂 Article 📅 1975 🏛 John Wiley and Sons 🌐 German ⚖ 226 KB 👁 1 views

## Abstract Enol‐esters 1a‐1e undergo clean Photo‐__Fries__‐rearrangements without side reactions. With anthroyl derivatives the reaction is observed only at 254 nm, not at 366 nm.

Solvent and substituent effects on the r
Solvent and substituent effects on the reaction of 2- and 4-chloro-3,5-dinitrobenzotrifluorides with substituted anilines
✍ Basim H. M. Asghar; Magda F. Fathalla; Ezzat A. Hamed 📂 Article 📅 2009 🏛 John Wiley and Sons 🌐 English ⚖ 135 KB

## Abstract The solvent effect on a nucleophilic substitution reaction of 2‐ and 4‐chloro‐3,5‐dinitrobenzotrifluoride with substituted anilines was studied in methanol, acetonitrile, and toluene at 25°C. This reaction is of second order, except 2‐chloro‐3,5‐dinitrobenzotrifluoride in toluene shows