Preparation of substituted transition-metal (η1-propargyl complexes and their [3+2] cycloaddition reactions with sulfur dioxide and disulfur monoxide. Transition-metal–carbon bond cleaving reactions of the cycloadducts which yield oxathiolene oxides and dithiolene oxides
作者:Elizabeth E Scott、Erling T Donnelly、Mark E Welker
DOI:10.1016/s0022-328x(03)00167-0
日期:2003.4
The preparations of several new cyclopentadienyl iron dicarbonyl η1-2-alkynyl complexes are reported. Their [3+2] cycloaddition reactions with sulfurdioxide and disulfur monoxide yielded transition-metal substituted 1,2-oxathiolene-2-oxides and 1,2-dithiolene-1-oxides, respectively. The transition-metal was cleaved from the oxathiolene-oxide and dithiolene-oxide containing complexes to produce new
The Cascade Reactions of Indigo with Propargyl Substrates for Heterocyclic and Photophysical Diversity
作者:Patrick M. McCosker、Nicholas M. Butler、Alireza Shakoori、Michel K. Volland、Matthew J. Perry、Jesse W. Mullen、Anthony C. Willis、Timothy Clark、John B. Bremner、Dirk M. Guldi、Paul A. Keller
DOI:10.1002/chem.202003662
日期:2021.2.19
propargyl moiety can behave as an electrophile when aromatic terminal substitutions are made, and therefore competes with leaving group substitution for new outcomes. Selected products from the cascade reactions were investigated for their absorption and fluorescence properties, including transient absorption spectroscopy. This revealed polarity dependent excited state relaxation pathways, fluorescence, and