𝔖 Bobbio Scriptorium
✦   LIBER   ✦

The addition of HOBr to allene secondary deuterium isotope effects

✍ Scribed by William R. Dolbier Jr.; Basil H. Al-Sader

Publisher
Elsevier Science
Year
1975
Tongue
French
Weight
192 KB
Volume
16
Category
Article
ISSN
0040-4039

No coin nor oath required. For personal study only.

✦ Synopsis

Electrophilic additions to allene interestingly proceed with orientations for addition which are very much dependent upon the nature of the electrophile.

2 Additions involving a proton as the reactive electrophile, for example, proceed with almost exclusive attack at the

πŸ“œ SIMILAR VOLUMES

Isotope. II. further comments on the con
Isotope. II. further comments on the contribution on nonbonded interactions to secondary deuterium isotope effects.
✍ Gerasimos J. Karabatsos; Christos G. Papaioannou πŸ“‚ Article πŸ“… 1968 πŸ› Elsevier Science 🌐 French βš– 152 KB

In a recent cosnxurlcation (1) we concluded that reasonable estimates of secotiary deuterium isotope effects caused by rronbotied interactions may be obtained by using Bartell's procedure (2). Particularly disturbing was the discrepancy between the experlmentat isotope effect,

No Contribution of an Inductive Effect t
No Contribution of an Inductive Effect to Secondary Deuterium Isotope Effects on Acidity
✍ Prof. Charles L. Perrin; Agnes Flach πŸ“‚ Article πŸ“… 2011 πŸ› John Wiley and Sons 🌐 English βš– 274 KB

Isotope effects are observed when a reaction rate or equilibrium constant changes as a result of isotopic substitution. [1] They continue to be used as valuable tools to provide insight into molecular structure and reactivity. [2] Secondary isotope effects are those in which the bond to the isotope

Secondary Ξ±-deuterium kinetic isotope ef
Secondary Ξ±-deuterium kinetic isotope effects for addition of phenyl radical to benzyl isocyanides: An evidence of concerted mechanism.
✍ Soo Kim Sung; Seung Lee Ki; Bong Hwang Soo; Jin Kim Hee πŸ“‚ Article πŸ“… 1990 πŸ› Elsevier Science 🌐 French βš– 282 KB

Sumnary: Addition of phenyl radical to benzyl isocyanides gives benzonitrile and benzyl radicals, exhibiting positive Hamnett p=O.26 and notable secondary a-deuterium kinetic isotope effects. These can be rationalized by concerted bond formation/cleavage occurring with polar transition states(TS).