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Beilstein J. Org. Chem. 2023, 19, 1947–1956, doi:10.3762/bjoc.19.145
Graphical Abstract
Figure 1: Various types of stable singlet carbenes and their acronyms.
Figure 2: Various types of NHC·CS2 zwitterions and their coordination modes.
Scheme 1: Synthesis of CAAC·CS2 zwitterion 2 from its free carbene parent 1.
Scheme 2: Synthesis of CAAC·CS2 zwitterions 4a–c with KN(SiMe3)2.
Scheme 3: Synthesis of 1,2,3-triazolium iodides 5a–f.
Scheme 4: Synthesis of MIC·CS2 zwitterions 6a and 6b with KN(SiMe3)2.
Scheme 5: Synthesis of MIC·CS2 zwitterions 6c–f with NaOt-Bu.
Figure 3: ORTEP representations of zwitterions 4a (CAAC-Mes-Cy·CS2, top) and 4c (CAAC-Die-MePh·CS2, bottom) w...
Figure 4: ORTEP representations of zwitterions 6b (MIC-Dip-Ph-Me·CS2, top) and 6e (MIC-Mes-Bu-Me·CS2, bottom)...
Beilstein J. Org. Chem. 2010, 6, 1167–1173, doi:10.3762/bjoc.6.133
Scheme 1: Reaction of homobimetallic ruthenium–indenylidene complex 1 with ethylene.
Scheme 2: Schematic illustration of tandem assisted catalysis with complexes 1 and 2.
Scheme 3: Tandem RCM/ATRC of 2,2,2-trichloro-N-(octa-1,7-dien-3-yl)acetamide (4) catalyzed by complex 1.
Scheme 4: Ruthenium catalyzed transformation of substrate 16.