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Convenient preparations of t-butyl esters and ethers from t …
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WebAqueous 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. The reactions are high yielding, and the workup is convenient. WebJul 5, 2024 · Tert-butyl esters were prepared from potassium tert-butoxide in 2 steps, as shown in Scheme 2.In the reaction, potassium tert-butoxide was converted to 2-tert-butoxypyridine by previously reported method. 21 Treatment of potassium tert-butoxide with 2-chloropyridine in the presence of 18-crown-6 in toluene at 110 °C for 15 h generated 2 … WebDWK Life Sciences (Wheaton) Available in Natural red rubber, gray butyl and Teflon® coated butyl 7, 13 and 20 mm sizes Stoppers come in a variety of elastomer … russia\u0027s big problem with ukraine