Mechanism of an intramolecular addition–elimination between amino and amide groups; a biphasic Brønsted plot for acid catalysis as evidence for rate-limiting proton transfer to the addition intermediate
Mechanism of an intramolecular addition–elimination between amino and amide groups; a biphasic Brønsted plot for acid catalysis as evidence for rate-limiting proton transfer to the addition intermediate
Hibbert, Frank; Malana, Muhammad Aslam, Journal of the Chemical Society. Perkin transactions II, 1992, # 2, p. 755 - 759
作者:Hibbert, Frank、Malana, Muhammad Aslam
DOI:——
日期:——
Hibbert, Frank; Malana, Muhammad Aslam, Journal of the Chemical Society. Perkin transactions II, 1992, # 7, p. 1067 - 1070
作者:Hibbert, Frank、Malana, Muhammad Aslam
DOI:——
日期:——
Baynham, Andrew S.; Hibbert, Frank; Malana, Muhammad A., Journal of the Chemical Society. Perkin transactions II, 1993, # 10, p. 1711 - 1716
作者:Baynham, Andrew S.、Hibbert, Frank、Malana, Muhammad A.
DOI:——
日期:——
Mechanism of an intramolecular addition–elimination between amino and amide groups; a biphasic Brønsted plot for acid catalysis as evidence for rate-limiting proton transfer to the addition intermediate
作者:Andrew S. Baynham、Frank Hibbert、Muhammad Aslam Malana
DOI:10.1039/c39920001110
日期:——
Formation of 2-trifluoromethylperimidine from 1-amino-8-trifluoroacetylaminonaphthalene involves intramolecular nucleophilic addition of the amino group to the amide carbonyl followed by elimination to form the cyclic imine; a biphasic Brønsted plot with slopes αca.O and 1.0 respectively for catalysis by acids (HA) with pKHA values below and above a break point at pKHA 8.5 is compatible with rate-limiting protonation of the zwitterionic addition intermediate by general acids and with a proton switch mechanism for reaction with water.