The KI-catalyzed reaction of acetone with aromatic carboxylic acids is achieved, leading to α-acyloxycarbonyl compounds in good to excellent yields under mild reaction conditions. The present method exhibits good functional-group compatibility. Notably, this reaction system is even suitable for cinnamic acid, 3-phenylpropiolic acid and 4-phenylbutanoic acid. A kinetic isotope effect (KIE) study indicates
Ruthenium Carboxylate Complexes as Efficient Catalysts for the Addition of Carboxylic Acids to Propargylic Alcohols
作者:Janine Jeschke、Christian Gäbler、Marcus Korb、Tobias Rüffer、Heinrich Lang
DOI:10.1002/ejic.201500203
日期:2015.6
Heinrich Lang at the Technische Universitat Chemnitz, Germany. The cover image shows the atom-economical and highly selective addition of carboxylic acids to propargylicalcohols to give β-oxopropyl esters. This conversion is catalyzed by ruthenium complexes, represented by the skater in our picture.
德国开姆尼茨理工大学的 Heinrich Lang 小组受邀为本期杂志封面。封面图片显示了羧酸与炔丙醇的原子经济性和高选择性加成,以得到 β-氧代丙酯。这种转化由钌配合物催化,由我们图片中的溜冰者代表。
Oxidative C–H Acyloxylation of Acetone with Carboxylic Acids under Iodine Catalysis
作者:Xiao-Yu Zhou、Xia Chen
DOI:10.1055/a-1336-5720
日期:2021.5
Iodine-catalyzed oxidative C(sp3)–H acyloxylation of acetone with carboxylic acids has been developed. The method employs iodide as catalyst and sodium chlorite as oxidant. Substituted benzoic acids, naphthoic acids and heteroaromatic carboxylic acids can be used, and 2-oxopropyl carboxylates are obtained with good to excellent yields.