TES Protecting Group Addition With TESOTf | Organic Chemistry @OrganicMechanismsChannel

Uploaded April 2024 | Updated September 2026, 1 week ago

The mechanism for the addition of a TES (triethylsilyl) protecting group. Tertiary alcohols react very poorly with TES-Cl. Pyridine can also be used as a promoter. Alternatively, the triethylsilyltriflate TES-OTf can be used to introduce the triethylsilyl group. TES ethers can be selectively removed in the presence of TBS ethers.

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