N 10 N-heterocyclic carbenes. IV.(1)Synthesis of symmetrical and unsymmetrical imidazolium salts with abietane moiety / V. A. Glushkov, K. A. Arapov, M. S. Kotelev, K. S. Rudowsky, K. Yu. Suponitsky, A. A. Gorbunov, O. A. Maiorova, P. A. Slepukhin // Heteroatom Chemistry. - 2012. - Vol.23, №1. - С. 5-15 Рубрики: ХИМИЧЕСКИЕ НАУКИ Кл.слова (ненормированные): IMIDAZOLINIUM -- 12-AMINODEHYDROABIETATE -- SALTS OF IMIDAZOLINIUM Аннотация: Methyl 12-chloromethyl-dehydroabie-tate reacts with 1-benzyl- and 1-arylimidazoles to give unsymmetrically substituted imidazolium chlorides (1a–i), with abietane moiety. Starting from methyl 12-aminodehydroabietate, symmetrically substituted diterpene-based salts of imidazolinium (4) and imidazolium (5) were synthesized. Anion exchange afforded corresponding (1e·BF4) and (1e·PF6). The new compounds were tested as ligands for a Pd-catalyzed Suzuki-Miyaura reaction. The molecular structure of (1e) is reported \\\\Expert2\\nbo\\Heteroatom Chemistry\\2012, V. 23, N 1, P. 5-15.pdf |