Protecting Groups for Thiols Suitable for Suzuki Conditions |
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Authors: | Zeysing Gosch Terfort |
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Institution: | Institut für Anorganische und Angewandte Chemie, Universit?t Hamburg, Martin-Luther-King-Platz 6, 20146 Hamburg, Germany. |
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Abstract: | The thiol group is one of the few groups NOT tolerated by the Suzuki reaction. Therefore, a new protective group, the 2-methoxyisobutyryl group, was developed by tuning the electronic/steric properties of the acyl residue. Other thioesters, such as thioacetate, result in a more or less dominant side reaction, which to date has not been described: sulfur-assisted acylation of boronic acids. The reaction pathway for this new reaction is discussed. |
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