| Stodies on the Witting Reaction (Ⅹ Ⅹ Ⅻ) Phase Transfer Catalytic Bis-Witting Reaction of 1,2-and 1,3-Bisylide |
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| 摘 要： | Insplteofsometechnicalproblems,theWittigreactionisstillparticu1arlyusefulforthesynthesisofvarlousalkenesowlngtoltsknownversatllity.SlnceMarklandMerzL1'1ntroducedtheconceptofphasetransfercatalysisinWittigreaction,thisreac-tlonwasmod1fiedandcanbeperformed1naverys1mpleway.Recently,bls-W1ttlgreac-tlonhasbecomeasyntheticmethodforacyclicandcycllcpolyenes[:jespec1allyforthesynthesisofnaturalproductsL'1.However,llttleattentionwaspaidtoPTC-bis-Wittigreactlon.AsapartofourongolngstudiesofWittigreact…
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