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The nature of the transition state in amides pyrolysis. The rates of pyrolysis of N-benzoyl and N-acetylpropanamide, N-benzoyl and N-acetyl-2-methylpropanamide, and N-thioacetylpropanamide

✍ Scribed by Nouria A. Al-Awadi; Fatima A. Al-Omran; Tommy Mathew

Publisher: John Wiley and Sons
Year: 1995
Tongue: English
Weight: 316 KB
Volume: 27
Category: Article
ISSN: 0538-8066
DOI: 10.1002/kin.550270102

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✦ Synopsis

The rates of gas-phase elimination reactions of N-benzoyl and N-acetyl-propanamide and N-benzoyl and N-acetyl-2-methylpropanamide are measured and discussed. They undergo unimolecular first-order elimination reactions. The reactivities of N-benzoylamides have been compared with each other and with those of N-acetylamides. The kinetic data together with the product analysis reveals that, the statistical factor of the availability of P-hydrogen atoms for elimination as well as steric factor are obscured by polar factor in gas-phase elimination reactions of N-benzoylamides while the statistical factor rather than electronic effect operates in each of N-acetylamides.

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