噻吩,2,5-二氯-3,4-二(氯甲基)-   、                                                                                      
羟丙基淀粉磷酸酯                                                                                                                                                              在
                                                                                                                                                                                 sodium hydride                                                                                                                                  作用下,
                                                                                                                                                                                                                            生成                                                 
21,23-dichloro-3,6,9,12,15,18-hexaoxa-22-thiabicyclo<18.3.0>tricosa-1(23),20-diene   、                                                                                             21,23,44,46-tetrachloro-3,6,9,12,15,18,26,29,32,35,38,41-dodecaoxa-22,45-dithiatricyclo<41.3.0.0
20,24>hexatetraconta-1(46),20,23,43-tetraene