Peroxotungstophosphate (PCWP) was found to be an efficient catalyst for the oxidation of amines with 35% H2O2 under the biphasic or homogeneous condition. Thus, primary and secondary amines were oxidized to oximes and nitrones, respectively, in good yields. Aromatic amines afforded to the corresponding nitroso compounds and/or nitrobenzenes.
Abstract Possibility of nitrosobenzenes to form dimeric molecular structures (azodioxides) is used as a model for intermolecular selectivity investigations in solution as well as in solidstate. Cross-dimerization of different combinations of p- and m-substituted nitrosobenzene pairs was studied by variable temperature 1H NMR, solid-stateNMR (CP MAS), IR, and ab initio calculations. It is evident that
摘要 亚硝基苯形成二聚分子结构(偶氮二氧化物)的可能性被用作溶液和固态分子间选择性研究的模型。通过变温 1H NMR、固态 NMR (CP MAS)、IR 和 ab initio 计算研究了对和间取代亚硝基苯对的不同组合的交叉二聚。很明显,对亚硝基苯具有非选择性,因为它与所有研究的亚硝基苯伙伴形成二聚体。相反,对甲氧基亚硝基苯在大多数情况下不会形成二聚体。可以通过晶格中分子排列的影响来解释溶液中形成二聚体的能力与固态不同的证据。
Sakaue Sigeki, Tsubakino Takashi, Nishiyama Yutaka, Ishii Yasutaka, J. Org. Chem., 58 (1993) N 14, S 3633-3638