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Beilstein J. Org. Chem. 2019, 15, 1996–2002, doi:10.3762/bjoc.15.195
Graphical Abstract
Figure 1: Inherent chirality generated by meta-substitution – the two structures are non-superposable mirror ...
Figure 2: General approach by Albrecht for MIC directed cyclometalation via C–H activation; M = Ru(II), Ir(II...
Figure 3: Concept of cyclometalated calix[4]arene target.
Scheme 1: Synthesis of model mesoionic carbene 5.
Scheme 2: Attempted Ullmann-coupling to give monoazide 7.
Scheme 3: Synthesis of monoazidocalix[4]arene 7 under optimized conditions.
Scheme 4: Synthesis of the putative calix[4]arene mesoionic carbene ruthenium complex 13.
Figure 4: High-resolution mass spectrum (ESI+) of putative ruthenacycle calix[4]arene 13.
Beilstein J. Org. Chem. 2017, 13, 347–347, doi:10.3762/bjoc.13.38
Beilstein J. Org. Chem. 2014, 10, 2751–2755, doi:10.3762/bjoc.10.291
Scheme 1: Synthesis of inherently chiral calix[4]arenes.
Scheme 2: Synthesis of tert-butyloxazoline calix[4]arenes.
Figure 1: N,S Ligands.
Scheme 3: Tsuji–Trost reaction.