Fig. 1: Syntheses of inverse crown complexes.
From: Redox-active inverse crowns for small molecule activation
a, Selective fourfold 1,1′,3,3′-deprotonation of ferrocene11. b, The meta-selective double deprotonation of N,N-dimethylaniline13 versus directed ortho metallation. TMEDA, N,N,N′,N′-tetramethylethylenediamine. c, Formation of the mixed-metal aggregate II from I and (CaN′′2)2 and synthesis of the redox-active inverse crown 1.
