Various types of aromatic aldehydes were efficiently converted to their corresponding 1,3-dioxanes and 1,3-dioxolane with 1,3-propanediol and ethylene glycol, respectively, in the presence of catalytic amount of ZrO(OTf)2 in acetonitrile at room temperature. The catalyst can be reused several times without loss of its catalytic activity. Very short reaction times, selective acetalization of aromatic
在室温下,在
乙腈中催化量的 ZrO(OTf)2 存在下,各种类型的芳香醛分别与
1,3-丙二醇和
乙二醇有效地转化为相应的
1,3-二氧六环和
1,3-二氧戊环温度。该催化剂可以重复使用多次而不会损失其催化活性。非常短的反应时间、在脂肪醛和酮的存在下选择性地将芳香醛
缩醛、非常温和的反应条件、催化剂的可重复使用性和易于处理是该方法的显着优点。© 2009 Wiley Periodicals, Inc. 杂原子
化学 20:131–135, 2009; 在线发表于 Wiley InterScience (www.interscience.wiley.com)。DOI 10.1002/hc.20523