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.