A mild Pd-catalyzed addition of indoles to hydroxy 1,6-enynes has been developed. In this reaction, hydroxy 1,6-enynes were selectively transformed into (E)-3-styryl-2,5-dihydro-1H-pyrrole derivatives.
作者:Stephan M. Rummelt、Gui‐Juan Cheng、Puneet Gupta、Walter Thiel、Alois Fürstner
DOI:10.1002/anie.201700342
日期:2017.3.20
regioselective intermolecular Alder‐ene‐type reaction of alkynes with 1,2‐disubstituted alkenes. The increased substrate scope opens new perspectives in stereochemical terms. As the loaded catalyst is chiral‐at‐metal, stereochemical information is efficiently relayed from the propargylic site to the emerging C−C bond. This interpretation is based on the X‐ray structure of the first Cp*Ru complex carrying
Propargyl Alcohols as β-Oxocarbenoid Precursors for the Ruthenium-Catalyzed Cyclopropanation of Unactivated Olefins by Redox Isomerization
作者:Barry M. Trost、Alexander Breder、B. Michael O’Keefe、Meera Rao、Adam W. Franz
DOI:10.1021/ja200971v
日期:2011.4.6
An atom-economical method for the direct synthesis of [3.1.0]- and [4.1.0]-bicyclic frameworks via Ru-catalyzed redoxbicycloisomerization of enynols is reported. The presented results highlight the unique reactivity profile of propargyl alcohols, which function as β-oxocarbene precursors, in the presence of a ruthenium(II) complex. Furthermore, a rare case of a formal vinylic C-H insertion reaction
报道了一种通过 Ru 催化的烯醇氧化还原双环异构化直接合成 [3.1.0]-和 [4.1.0]-双环骨架的原子经济方法。所呈现的结果突出了炔丙醇在钌 (II) 络合物存在下充当 β-氧代卡宾前体的独特反应性特征。此外,还描述了一种罕见的正式乙烯基 CH 插入反应的情况。