Synthesis of Bridgehead Derivatives; 2. Preparation of 1-Substituted Bicyclo[2.2.1]heptanes
作者:A. García Martínez、E. Teso Vilar、J. Coterón López、J. Manrique Alonso、M. Hanack、L. R. Subramanian
DOI:10.1055/s-1991-26463
日期:——
The reaction of bridgehead trifluoromethanesulfonates 1- and 4-trifluoromethylsulfonyloxycamphene (1a,b) with magnesium iodide or magnesium bromide in carbon disulfide yields the corresponding halides 2 and 3. The reaction time was reduced by sonication. The 1-(2-cyanoethyl)- and 2-methoxycarbonylethyl) -camphenes 6a and 7a, and the corresponding 4-substituted analogue 6b and 7b are prepared by radical addition of 2a and 2b to methyl acrylate (4) or acrylonitrile (5), respectively.
桥头三氟甲磺酸盐 1-和 4-三氟甲基磺酰氧基莰烯(1a,b)与碘化镁或溴化镁在二硫化碳中反应生成相应的卤化物 2 和 3。通过超声缩短了反应时间。将 2a 和 2b 分别与丙烯酸甲酯 (4) 或丙烯腈 (5) 自由基加成,可制备 1-(2-氰乙基)- 和 2-甲氧基羰基乙基)- 莰烯 6a 和 7a,以及相应的 4-取代类似物 6b 和 7b。