Indium-Catalyzed Synthesis of Keto Esters from Cyclic 1,3-Diketones and Alcohols and Application to the Synthesis of Seratrodast
作者:Yoichiro Kuninobu、Atsushi Kawata、Taihei Noborio、Syun-ichi Yamamoto、Takashi Matsuki、Kazumi Takata、Kazuhiko Takai
DOI:10.1002/asia.200900553
日期:2010.4.1
iron(III) triflate, Fe(OTf)3, copper(II) triflate, Cu(OTf)2, and silver(I) triflate, AgOTf, show high catalytic activities. These reactions proceed through the carbon–carbon bond cleavage by a retro‐aldol reaction and were found to be highly regioselective even in the presence of other functional groups. This type of reaction can also be applied to the preparation of the keto esters during the synthesis
环状1,3-二酮和醇的酯化反应是在几种路易斯酸的存在下进行的。特别是,三氟甲磺酸铟(III),In(OTf)3,三氟甲磺酸铁(III),Fe(OTf)3,三氟甲磺酸铜(II),Cu(OTf)2和三氟甲磺酸银(I)AgOTf高。催化活性。这些反应通过逆向醇醛缩合反应进行碳-碳键裂解,即使在存在其他官能团的情况下,也具有很高的区域选择性。这种类型的反应也可以用于合成塞拉卓斯特期间的酮酯的制备,后者是一种抗哮喘和类二十烷酸拮抗剂。