Deamination of nopylamine hydrochloride with sodium nitrite in acetic acid yields nopyl chloride 8, nopyl acetate 1 (R = OAc), 2-(1-acetoxyethyl)-6,6-dimethylbicyclo[3.1.1]hept-2-ene 9 and 3α-acetoxy-6,6-dimethylbicyclo[3.1.1]heptane-2-spiro-1â²-cyclopropane 12. The products are consistent with initial formation of a diazonium ion which reacts by nucleophilic attack, hydride shift or by shift of electrons of the double bond. The reaction is contrasted with the acetolysis of nopyl toluene-p-sulfonate, which yields 8,8-dimethyltricyclo[4.2.1.03,7]nonan-6-ol as the main product. The difference is suggested to result from the transition state being reached early (deamination) or late (toluene-p-sulfonate acetolysis) on the reaction coordinate.
在
乙酸中,用
亚硝酸钠对
盐酸壬胺进行脱
氨基,得到
氯化壬酯 8、
乙酸壬酯 1 (R = OAc)、2-(1-乙酰氧基乙基)-6,6-二甲基双环[3.1.1]庚-2-烯 9 和3α-乙酰氧基-
6,6-二甲基双环[3.1.1]庚烷-2-螺-1-
环丙烷 12。产物与重氮离子的初始形成一致,该重氮离子通过亲核攻击、
氢化物移位或通过移位进行反应双键的电子数。该反应与
对甲苯磺酸壬酯的乙酰解反应形成对比,后者产生主要产物8,8-二甲基
三环[4.2.1.03,7]壬-6-醇。这种差异被认为是由于反应坐标上过渡态提前(脱
氨)或较晚(
甲苯-对-
磺酸酯乙酰解)达到的结果。