Question

Tertiary butyl ether can be
deprotected in....​

Answer 1

Aqueous phosphoric acid is an effective, environmentally benign, selective and mild reagent for the deprotection of tert-butyl carbamates, tert-butyl esters, and tert-butyl ethers. CBZ carbamates, azetidine, benzyl and methyl esters, TBDMS, and methyl phenyl ethers are tolerated