Unusual and Unexpected Reactivity of <i>t-</i>Butyl Dicarbonate (Boc<sub>2</sub>O) with Alcohols in the Presence of Magnesium Perchlorate. A New and General Route to <i>t-</i>Butyl Ethers
[reaction: see text] A new mild method for protecting alcohols as t-butylethers is reported. The reaction proceeds with Mg(ClO4)2 and Boc2O and shows general applicability. The deprotection of t-butylethers has also been revisited. Preliminary results indicate the CeCl3 x 7H2O/NaI system is a very suitable catalyst for their removal.
[反应:见正文]据报道,一种新的温和的保护叔丁醚醇的方法。反应与Mg(ClO4)2和Boc2O进行,显示出一般的适用性。也已经重新考虑了叔丁基醚的脱保护。初步结果表明,CeCl3 x 7H2O / NaI体系是非常适合去除它们的催化剂。