Desulfurizative cyclopropanation of 2-(1-alkenyl)-1,3-dithianes and substituted 1,3-bis(phenylthio)-1-propenes with titanocene-olefin complexes

Add time:08/02/2019    Source:sciencedirect.com

The reaction of 2-(1-alkenyl)-1,3-dithianes with the titanocene-olefin complexes, prepared by the reaction of titanocene dichloride with 2 cquiv of alkyllithiums, in the presence of triphenyl-phosphine gave 1-alkenylcyclopropanes in good yields. The similar reaction of substituted 1,3-bis(phenylthio)-1-propenes also proceeded to produce the cyclopropanes.

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