20.500.12556/RUL-133746 Conformationally driven Ru(II)-catalyzed multiple ortho-C-H bond activation in diphenylpyrazine derivatives in water where is the limit? Ru(II)/carboxylate/PPh$_3$ catalyst system enabled the preparation of highly conjugated pyrazine derivatives in water under microwave irradiation. Both nitrogen atoms efficiently dictated cleavage of the ortho-C–H bonds in both benzene rings of 2,3-diphenylpyrazine substrates through chelation assistance. In conformationally more flexible diphenyldihydropyrazine 1, the arylation of four ortho-C–H bonds was possible, while in the aromatic analog 2, the triarylation was the limit. ruthenium catalysts heterocycles green chemistry microwave direct arylation rutenijevi katalizatorji heterocikli zelena kemija mikrovalovi usmerjeno ariliranje true false true Angleški jezik Slovenski jezik Članek v reviji 2021-12-13 14:07:01 2021-12-13 14:07:03 2022-09-13 03:52:28 0000-00-00 00:00:00 2020 0 0 14 str. iss. 4, art. 421 Vol. 10 Apr. 2020 0000-00-00 Zaloznikova Objavljeno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 547.86:66.097:546.96 2073-4344 10.3390/catal10040421 1538567875 RAZ_Hrovat_Sara_2020.pdf RAZ_Hrovat_Sara_2020.pdf 1 4DAA80BB973A16E8B2E1E3DFA110C430 1e71c4c8354183137e74b8a09a07571d045717687a7f9e6258cc0e2bb6796315 b89b18dc-5c15-11ec-abdb-00155dcfd717 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=152079 https://www.mdpi.com/2073-4344/10/4/421 1 7270102c-5c15-11ec-abdb-00155dcfd717 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=152078 Fakulteta za kemijo in kemijsko tehnologijo 0 0 0