A Practical and Efficient Route for the Highly Enantioselective Synthesis of Mexiletine Analogues and Novel β-Thiophenoxy and Pyridyl Ethers

Abstract
A practical and efficient procedure for the enantioselective synthesis of mexiletine analogues with use of 10% of spiroborate ester 6 as chirality transfer agent is presented. A variety of mexiletine analogues were prepared in good yield with excellent enantioselectivities (91−97% ee) from readily available starting materials. The developed methodology was also successfully applied for the synthesis of novel β-amino ethers containing thiophenyl and pyridyl fragments.

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