Trifluoro-methanesulfonic acid (2R,3S,5S,6S)-1,4-dimethylene-2,3,5,6-tetrakis-triethylsilanyloxy-8-trimethylsilanyl-oct-7-ynyl ester                                                                                                                                                              在
                                                                                                                                                                                 
N-溴代丁二酰亚胺(NBS)   、                                                                                                  
silver nitrate                                                                                                                                  作用下,
                                                                                                                以
                                                                                         
四氢呋喃   、                                                                                         
丙酮                                                                                  为溶剂,
                                                                                                                                                    反应 22.0h,
                                                                                                                生成                                                 (3S,4S,6S,7S)-1,11-Dibromo-5,8-dimethylene-3,4,6,7-tetrakis-triethylsilanyloxy-undeca-1,10-diyne