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Puerta Lombardi, Braulio M; Pezoulas, Ethan R; Suvinen, Roope A; Harrison, Alexander; Dubrawski, Zachary S; Gelfand, Benjamin S; Tuononen, Heikki M; Roesler, Roland
Chemical communications (Cambridge, England), 06/2022, Letnik: 58, Številka: 45Journal Article
Isomeric bis(aldiminium) salts with a 1,4-cyclohexylene framework were synthesized. The first isolable bis(CAAC) was prepared from the -stereoisomer and its ditopic ligand competency was proven by conversion to iridium(I) and rhodium(I) complexes. Upon deprotonation, the -isomer yielded an electron rich olefin a classic, proton-catalyzed pathway. The CC bond formation from the desired -bis(CAAC) was shown to be thermodynamically very favorable and to involve a small activation barrier. Compounds that can be described as insertion products of the -bis(CAAC) into the E-H bonds of NH , CH CN and H O were also identified.
