Structural Factors for the Formation of Propellane-Type Products in the Solvolysis of Bicyclic Bridgehead Compounds
作者:Kazuhiko Tokunaga、Seiichiro Tachibana、Takao Okazaki、Yasushi Ohga、Toshikazu Kitagawa、Ken'ichi Takeuchi
DOI:10.1021/jo000444d
日期:2000.8.1
the corresponding propellanone in 12%, 20%, or 3.2% yield, respectively, beside substitution or rearranged products under typical conditions. No propellane-type product was obtained in the solvolyses of 1-bromobicyclo[3.3.1]nonane, 2-methylidenebicyclo[3.3.1]non-1-yl heptafluorobutyrate, and 3, 3-dimethyl-2-thioxobicyclo[3.3.1]non-1-yl tosylate. The factors that permit the formation of the propellane-type
2-氧代双环[3.3.1]壬-1-基三氟甲磺酸酯,3、3-二甲基-2-氧代双环[3.3.1]壬-1-基三氟甲磺酸酯和2-氧代双环[4]的甲醇水解。3.1]甲磺酸癸-1-基酯在典型条件下除取代或重排产物外,分别以12%,20%或3.2%的产率得到相应的螺酮。在1-溴双环[3.3.1]壬烷,2-亚甲基双环[3.3.1]壬-1-基七氟丁酸酯和3,3-二甲基-2-硫代双环[3.3.1]的溶剂解中未获得丙炔类产物] 1-甲苯磺酸壬基酯。在PM3和B3LYP / 6-31G的理论计算的帮助下,研究了允许由中间桥头阳离子形成丙炔型产物的因素。