Electrophilically initiated 1,2-TMS group migration-elimination within bis(O-TMS) and 1-(O-TMS), 4-(O-mesyl) derivatives of 1-TMS-2-alkyn-1,4-diols affords α-TMS allenones.
                                    在1-TMS-2-炔基-1,4
-二醇的双(O-TMS)和1-(O-TMS),4-(O-甲磺酰基)衍
生物中进行亲电引发的1,2-TMS基团迁移消除α-TMS
异戊二烯。