Ethyl ortho-propionate   、                                                                                      
3,7-二甲基-6-辛烯-1-炔基-3-醇   、                                                                                      
异丁酸                                                                                                                                                                                                                                                                              135.0~140.0 ℃
                                                                                                                            、40.88 kPa
                                                                                条件下,
                                                                                                                反应 4.0h,
                                                                                                                以Ethyl 2,5,9-trimethyl-3,4,8-decatrienoate was obtained in a yield of 98.5% from a fraction boiling at 129 to 130°C. under 2.3 mm Hg的产率得到2,5,9-Trimethyl-deca-3,4,8-triencarbonsaeure-aethylester