Relative Control Exclusively Through Double-Bond Configurations

Relative Control Exclusively Through Double-Bond Configurations 

Efficient asymmetric induction with 1,3-chirahty transfer has also been described with substrates possessing a stereogenic center in the position alpha to the sulfur atom and an allyhc moiety with a controlled configuration. Despite interesting synthetic features, reported examples are scarce and limited to the zwitterionic BeUus variant of the Claisen rearrangement [98,100]. 

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