33415-80-4Relevant articles and documents
Ligand-Free Catalytic Cross-Coupling in the System Aryl Halide–Arylacetylene–Alkene
Lagoda,Vidyaeva,Larina,Kurokhtina,Schmidt
, p. 71 - 78 (2021/03/03)
Abstract: Three-component cross-coupling in the system aryl halide–arylacetylene–alkenein the presence of simplest ligand-free palladium catalysts gave products ofboth 1+1+1-coupling and cross-dimerization of arylacetylene with alkene. Thepossibility of c
Hydrothermal photochemistry as a mechanistic tool in organic geochemistry: The chemistry of dibenzyl ketone
Yang, Ziming,Lorance, Edward D.,Bockisch, Christiana,Williams, Lynda B.,Hartnett, Hilairy E.,Shock, Everett L.,Gould, Ian R.
, p. 7861 - 7871 (2015/03/18)
Hydrothermal organic transformations under geochemically relevant conditions can result in complex product mixtures that form via multiple reaction pathways. The hydrothermal decomposition reactions of the model ketone dibenzyl ketone form a mixture of reduction, dehydration, fragmentation, and coupling products that suggest simultaneous and competitive radical and ionic reaction pathways. Here we show how Norrish Type I photocleavage of dibenzyl ketone can be used to independently generate the benzyl radicals previously proposed as the primary intermediates for the pure hydrothermal reaction. Under hydrothermal conditions, the benzyl radicals undergo hydrogen atom abstraction from dibenzyl ketone and para-coupling reactions that are not observed under ambient conditions. The photochemical method allows the primary radical coupling products to be identified, and because these products are generated rapidly, the method also allows the kinetics of the subsequent dehydration and Paal-Knorr cyclization reactions to be measured. In this way, the radical and ionic thermal and hydrothermal reaction pathways can be studied separately.
