As we haVe previously pointed out], the position of the Transition State along the reaction coordinate is a matter of controversy among workers in the field of nucleophilic addition reactions to carbonyl compounds. Some authors claim that the transition state is always "Reactant-like" whatever may b
The structure of the transition state in nucleophilic addition reactions to carbonyl compounds.
β Scribed by P. Geneste; G. Lamaty; J-P. Roque
- Publisher
- Elsevier Science
- Year
- 1970
- Tongue
- French
- Weight
- 216 KB
- Volume
- 11
- Category
- Article
- ISSN
- 0040-4039
No coin nor oath required. For personal study only.
β¦ Synopsis
We have been interested for some time in the nucleophilic addition reactions to carl-6 bony1 compounds , the interpretation of our kinetic data has lead us to conclude that the position of the transition state along the reaction coordinate is not the same for all reactions and depends instead upon the nucleophilic reagent. This point, however, is a matter of controversy among workers in this field ; the "old" dichotomy first proposed by DAUBhN7 -Steric approach control versus product development control -nas been sharply criticized in recent years 8-12 and CHEREST and FELKIN 12 have postulated
π SIMILAR VOLUMES
Summarv : The transition state structures for addition of LiH to 1, 2, and 3 are computed and analyzed at MP2/6-3lG(d)//HF/6\_3lG(d). Three factors are found to be important for the relative energies of the transition state structures: (i) the conformational energy of the aldehyde; (ii) the interac
## Abstract magnified image Over the past decade, large strides have been achieved in the invention of methods for the direct enantioselective addition of alkynes and metal alkynylide nucleophiles into prochiral aldehydes, ketones, and imines. This review highlights and compares the available meth