Skip to Content

One-pot synthesis of 2-phenylimidazo[1,2-α]pyridines from acetophenone, [Bmim]Br(3) and 2-aminopyridine under solvent-free conditions.

One-pot synthesis of 2-phenylimidazo[1,2-α]pyridines from acetophenone, [Bmim]Br(3) and 2-aminopyridine under solvent-free conditions.

Molecules (Basel, Switzerland) (2012-11-13)

Zhang-Gao Le, Zong-Bo Xie, Jian-Ping Xu

ABSTRACT

One-pot synthesis of 2-phenylimidazo[1,2-α]pyridines from acetophenone, [Bmim]Br(3) and 2-aminopyridine under solvent-free conditions in the presence of Na(2)CO(3), gave the corresponding 2-phenylimidazo[1,2-α]pyridines in excellent yields ranging from 72% to 89%.

MATERIALS

Product Number

Brand

Product Description

Supelco

Sodium carbonate, reference material for titrimetry, certified by BAM, >99.5%

Sigma-Aldrich

Acetophenone, puriss. p.a., ≥99.0% (GC)

Sigma-Aldrich

Sodium carbonate, BioUltra, anhydrous, ≥99.5% (calc. on dry substance, T)

Sigma-Aldrich

Sodium carbonate, BioXtra, ≥99.0%

Sigma-Aldrich

Acetophenone, ReagentPlus^®, 99%

Sigma-Aldrich

Acetophenone, ≥98%, FG

Sigma-Aldrich

Sodium carbonate, anhydrous, powder, 99.999% trace metals basis

Supelco

Acetophenone, analytical standard

Sigma-Aldrich

Sodium carbonate decahydrate, 99.999% trace metals basis

Sigma-Aldrich

Sodium carbonate decahydrate, puriss. p.a., ≥99.0% (T)

Sigma-Aldrich

Sodium carbonate, anhydrous, free-flowing, Redi-Dri^™, ACS reagent (primary standard), 99.95-100.05% dry basis

Sigma-Aldrich

Sodium carbonate, anhydrous, free-flowing, Redi-Dri^™, ReagentPlus^®, ≥99.5%

Sigma-Aldrich

Sodium carbonate, anhydrous, powder or granules, free-flowing, Redi-Dri^™, ACS reagent, ≥99.5%

Sigma-Aldrich

Sodium carbonate monohydrate, puriss., meets analytical specification of Ph. Eur., BP, NF, FCC, E500, 99.5-100.5% (ex dried subst.)

Sigma-Aldrich

Sodium carbonate, ACS reagent, anhydrous, ≥99.5%, powder or granules

Sigma-Aldrich

Sodium carbonate, ACS reagent (primary standard), anhydrous, 99.95-100.05% dry basis

Sigma-Aldrich

Sodium carbonate monohydrate, ACS reagent, ≥99.5%

Sigma-Aldrich

Sodium carbonate, powder, ≥99.5%, ACS reagent

Sigma-Aldrich

Sodium carbonate monohydrate, ReagentPlus^®, ≥99.5%

Sigma-Aldrich

Sodium carbonate, ReagentPlus^®, ≥99.5%

Supelco

Sodium carbonate concentrate, 0.1 M Na₂CO₃ in water, eluent concentrate for IC

Supelco

2-Aminopyridine, PESTANAL^®, analytical standard

Sigma-Aldrich

2-Aminopyridine, ≥99%

Sigma-Aldrich

2-Aminopyridine, 99%

Sigma-Aldrich

Sodium carbonate-¹²C, 99.9 atom % ¹²C

Sigma-Aldrich

2-Aminopyridine, purum, ≥98.0% (NT)

Supelco

Sodium carbonate concentrate, Na₂CO₃ 72 mM in water, IC eluent concentrate (20x) for Metrosep A Supp 7