Cerium(IV)-Catalyzed Deprotection of Acetals and Ketals under Mildly Basic Conditions
作者:István E. Markó、Ali Ates、Arnaud Gautier、Bernard Leroy、Jean-Marc Plancher、Yannick Quesnel、Jean-Christophe Vanherck
DOI:10.1002/(sici)1521-3773(19991102)38:21<3207::aid-anie3207>3.0.co;2-i
日期:1999.11.2
Smooth and quantitative deprotection of a wide range of acetals and ketals [Eq. (a); R, R(1)=alkyl, aryl, H] under neutral to mildly basic conditions was achieved with catalytic quantities of cerium ammonium nitrate (CAN). The reaction conditions are compatible with a variety of sensitive functional groups, and aldehydes can be liberated from acetals without being oxidized to the corresponding carboxylic
各种缩醛和缩酮的平滑定量脱保护[Eq。(一种); R,R(1)=烷基,芳基,H]在中性至弱碱性条件下用催化量的硝酸铈铵(CAN)实现。反应条件与各种敏感的官能团相容,并且醛可以从缩醛中释放出来而不会被氧化为相应的羧酸。