Synthesis of tetrakis(2-pyridyl)methane: the first tetrapyridylmethane

Bridging ligands comprising two or more di-2-pyridylmethyl or amine arms: Alternatives to 2,2′-bipyridyl-containing bridging ligands

“…[24] The reaction required quite severe conditions to achieve reasonable yields of 1; for example, reaction of 2-chloropyridine and tris-2-pyridylmethyl lithium (5 equiv.) in THF at reflux for 24 hours only gave 1 in low yield, whereas in mesitylene at reflux a much improved yield of 52% was obtained.…”

Spin-crossover thermal hysteresis and light-induced effect on iron(II) complexes with tripodal tris(2-pyridyl)methanol

“…Although many SCO complexes from iron(II) hydrotris(1-pyrazolyl)borate have been well studied and established [4], there are few reports on tris(2-pyridyl)methane (py 3 CH) complexes [5] (Scheme 1; 2-pyridyl is abbreviated as py hereafter). Oda and coworkers have exploited a unique skeleton tetrakis(2-pyridyl)methane (py 4 C) [6]. We have reported py 4 C-bridged dinuclear Mn 2+ and Ni 2+ complexes from the magnetic interest owing to the spirojunctioned D 2d symmetry [7].…”

Unsaturated sulfur compounds from reactions of lithiated methylazines with carbon disulfide and electrophiles

“…The 1 H NMR spectrum of compound (12), from reaction of (5d) with ethyl chloroacetate, shows signals at δ 5.9 (1H, s, exchangeable, SH), 6.53 (1H, s, =CH) and 4.08 (2H, s, CH 2 ) ppm. This tautomer is stabilized by intramolecular hydrogen bonding.…”

“…When 2-methylpyridine (1a) was treated with excess of lithium diisopropylamide (LDA), at low temperature, followed by 2-bromopyridine, the main product was tetra-2-pyridylmethane (18) (60%) with only traces of tri-2-pyridylmethane (19) and di-2-pyridylmethane (20) (scheme 3) [12]. The identity of the main product was established by spectral data as well as elemental analysis.…”