Solvolysis of secondary alkyl azoxytosylates. A new reaction related to solvolytic deamination and arenesulphonate solvolysis
作者:H. Maskill、John T. Thompson、Alan A. Wilson
DOI:10.1039/p29840001693
日期:——
low concentrations of tetrabutylammonium perchlorate in 97TFE. 2-Adamantyl tosylate is formed in parallel with solvolysis product in ethanol and weakly aqueous ethanol, and is the sole organic product from reactions in chloroform and toluene. No relatively long lived intermediate such as 2-adamantyl tosylate is involved in the reaction in 97TFE, 80M, and 90M. The Kinetics and product results are satisfactorily
已在六氟丙烷-2-醇(HFIP),三氟乙醇(TFE),六氟丙烷-2-醇水溶液(97HFIP),三氟乙醇水溶液(97TFE),乙醇水溶液(50E和80E)中测量了2-金刚烷基苯甲酰基甲苯磺酸盐的溶剂分解速率,甲醇水溶液(80M),温度介于3-5之间。23和70°C,并确定了激活参数。已测量HFIP的O- 2 H溶剂动力学同位素效应(在50.8°C时k H / k D为1.02 5 ±0.02),并已在97HFIP中确定了次级α-氘动力学同位素效应(k H / k D1.090±0.005;40.2°C),50E(1.091∓0.006; 51.0°C)和80E(1.133∓0.009; 60.9°C)。80M中的甲磺酸和TFE中的吡啶都不会显着提高速率,并且由于97TFE中低浓度的高氯酸四丁铵的存在,几乎没有盐作用。甲苯磺酸2-金刚烷酯与乙醇和弱水性乙醇中的溶剂分解产物平行形成,是在氯仿和甲