(1S,2R,4R)-2-hydroxy-7,7-dimethyl-N,N-dipropyllbicyclo[2.2.1]heptane-1-carboxamide                                                                                                                                                              在
                                                                                                                                                                                 N,N,N,N-tetraethylammonium tetrafluoroborate                                                                                                                                  作用下,
                                                                                                                以
                                                                                         
乙醇   、                                                                                         
乙腈                                                                                  为溶剂,
                                                                                                                                                                                        以43%的产率得到(1S,4S,6R,8R)-3-propyl-4-ethyl-11,11-dimethyl-5-oxa-3-aza-tricyclo[6.2.1.0(1,6)]undecan-2-one