Journal of the American Chemical Society

Entropy barriers to proton transfer

M Meot-Ner, SC Smith

Index: Meot-Ner, Michael; Smith, Sean C. Journal of the American Chemical Society, 1991 , vol. 113, # 3 p. 862 - 869

Full Text: HTML

Citation Number: 30

Abstract

Abstract: Proton transfer between sterically hindered pyridines and amines proceeds through locked-rotor, low-entropy intermediates. The reactions exhibit slow kinetics (efficiencies of 0. I-0.0001) and large negative temperature coefficients (up to k= CT*.'). The rates become slower and the temperature dependencies steeper with increasing steric hindrance. The observations are reproduced by a multiple complex-switching RRKM ...

Related Articles:

tert-butylation of quinolinium cations and quinoline N-oxides by tert-butylmercury halides

[Russell, Glen A.; Wang, Lijuan; Yao, Ching-Fa Journal of Organic Chemistry, 1995 , vol. 60, # 17 p. 5390 - 5395]

Alkylation of heteroaryl halides by 2: 1 Grignard reagent/copper (I) mixtures. Synthesis of alkylated octahydrodibenzo [b, j][1, 10] phenanthrolines

[Bell, Thomas W.; Hu, Lain-Yen; Patel, Sanjay V. Journal of Organic Chemistry, 1987 , vol. 52, # 17 p. 3847 - 3850]

Chelate [2??(Iminoethyl) pyridine N??oxide] metal Complexes–Synthesis and Structural Comparison with Their Chemically Related 2??(Iminoethyl) pyridine??Derived …

[Nienkemper, Katrin; Kotov, Vasily V.; Kehr, Gerald; Erker, Gerhard; Froehlich, Roland European Journal of Inorganic Chemistry, 2006 , # 2 p. 366 - 379]

tert-butylation of pyridines, quinolines, and isoquinolines by tert-butylmercury halides

[Russell, Glen A.; Rajaratnam, Rajine; Wang, Lijuan; Shi, Bing Zhi; Kim, Byeong Hyu; Yao, Ching Fa Journal of the American Chemical Society, 1993 , vol. 115, # 23 p. 10596 - 10604]

Alkylation of pyridine in free radical chain reactions utilizing alkylmercurials

[Russell, Glen A.; Guo, Deliang; Khanna, Rajive K. Journal of Organic Chemistry, 1985 , vol. 50, # 18 p. 3423 - 3425]

More Articles...