Reaction of 1, 1-Bis(Methylthio)-3-Methyl-1, 3-Butadiene with Lithiated 3-Methyl-2-Butenyl Phenyl Sulfide. A Special Case of Cyclopropane Formation |
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Authors: | Odile Ruel Bernard Cazes Sylvestre Julia |
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Affiliation: | E. R. 12 C. N. R. S., Laboratoire de Chimie , Ecole Normale Supérieure , 24 rue Lhomond, 75231, Paris Cedex 05, France |
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Abstract: | Abstract The conjugated ketene dithioacetal 2 is now available by three different procedures1. This electrophilic isoprene compound has been shown to add smoothly some simple lithio derivatives, but the addition of 3-methyl-2-butenyl-lithium gave a product with total inversion of the starting allylic chain1a. |
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