6-Methyl-2-[2,2,6,6-tetramethyl-5-(2-pyridyl)hepta-3,4-dien-3-yl]pyridine

Abstract

The title compound, C21H26N2, a potential chiral ligand for transition metal‐catalysed reactions, crystallizes with one mol­ecule in the asymmetric unit; the mol­ecule has a pseudo‐twofold axis perpendicular to the central C=C=C fragment.

Synthesis and Complexation Properties of Allenic Bipyridines, a New Class of Axially Chiral Ligands for Transition Metal Catalysis

“…In case of the racemic bis‐ tert ‐butyl‐substituted allene 3b the solid‐state structure could also be determined (Figure 2). 17 The allene crystallizes in a triclinic unit cell which contains two molecules. Interestingly, the pyridine nitrogen atoms are facing away from each other.…”