80BuMeIm ClBuMe Pyrr BrBu-Im BuSO4BuMePyr BF4BuMe Im PF6TBA HSO4HTA-11-Bu-pyr BrOct4N BrTBABMePPh3 I1-n-Bu 吡啶 Br1-Bu-1-Me 吡咯烷…DIPEA HBr1-Bu-4-Mepyridinium BF4TBABDBU + HOAcMePPh3 IMePPh3 ClCaBr2TBA ClTBA ITBA BrTBA HSO4TBA OAcTBA FDBU HOAcDBU 乳酸DBU HBrDBU HClDBU HOPCHO-Et-DBU BrEt-DBU BrTBA PO4Et4N BrBu4N BrDBU-HOAc 原位DBU TFADBU Otf