Nanjappan, P.; Dhandapani, C.; Natarajan, K., Indian Journal of Chemistry - Section B Organic and Medicinal Chemistry, 1984, vol. 23, # 7, p. 623 - 630
The kinetics of oxidation of six epimeric pairs of piperidin-4-ols by vanadium(V) in the presence of sulphuric and perchloric acids in aqueous acetic acid have been investigated. The corresponding deuteriated piperidin-4-ols have been prepared in most cases and their rates of oxidation by VV have been measured. The reaction is first order in both oxidant and substrate at constant acid concentration
研究了在乙酸水溶液中硫酸和高氯酸存在下钒(V)氧化六对哌啶-4-醇的差向异构对哌啶-4-醇的动力学。在大多数情况下,已制备了相应的氘代哌啶-4-醇,并已测定了其被V V氧化的速率。在恒定的酸浓度下,该反应在氧化剂和底物中都是一级反应。关于[H 3 O +在高氯酸中,在恒定的离子强度下,]一致。主要的动力学同位素效应表明,含羟基碳的C–H或C–D键参与了氧化速率的确定步骤。已经提出了涉及自由基中间体的机理。然而,对于不具有同位素作用的c -2,c -6-二苯基-t -3,t -5,N-三甲基哌啶-r -4-ol提出了不同的速率测定步骤。已经基于构象差异讨论了哌啶-4-醇对氧化的反应性。激活参数也已确定。
Jambulingam, M.; Nanjappan, P.; Natarajan, K., Indian Journal of Chemistry - Section B Organic and Medicinal Chemistry, 1986, vol. 25, p. 390 - 394
作者:Jambulingam, M.、Nanjappan, P.、Natarajan, K.、Ramalingam, K.
DOI:——
日期:——
Natarajan, K.; Jambulingam, M.; Selvaraj, K., Indian Journal of Chemistry - Section B Organic and Medicinal Chemistry, 1984, vol. 23, # 9, p. 901 - 903
作者:Natarajan, K.、Jambulingam, M.、Selvaraj, K.、Nanjappan, P.、Ramalingam, K.
DOI:——
日期:——
NATARAJAN, K.;JAMBULINGAM, M.;SELVARAJ, K.;NANJAPPAN, P.;RAMALINGAM, K., INDIAN J. CHEM., 1984, 23, N 9, 901-903
作者:NATARAJAN, K.、JAMBULINGAM, M.、SELVARAJ, K.、NANJAPPAN, P.、RAMALINGAM, K.
DOI:——
日期:——
Nanjappan, P.; Dhandapani, C.; Natarajan, K., Indian Journal of Chemistry - Section B Organic and Medicinal Chemistry, 1984, vol. 23, # 7, p. 623 - 630
作者:Nanjappan, P.、Dhandapani, C.、Natarajan, K.、Ramalingam, K.