DOI:
10.1055/s-00000083
Synlett
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References
It is known that racemization of sulfoxide can proceed in the presence of acid anhydrides. Therefore, we did not separate the diastereomers and they were used as a mixture for the second arylation, see: Oae S, Kise M.
Tetrahedron Lett. 1967; 1409
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