In organic chemistry, atoms other than carbon and hydrogen are generally referred to as heteroatoms. The most common heteroatoms are nitrogen, oxygen and sulfur. Now I present to you an article called Domino Reaction of Arylglyoxals with Pyrazol-5-amines: Selective Access to Pyrazolo-Fused 1,7-Naphthyridines, 1,3-Diazocanes, and Pyrroles, published in 2014-06-06, which mentions a compound: 118430-78-7, mainly applied to domino heterocyclization arylglyoxal pyrazolamine pyrazolo naphthyridine diazocane pyrrole, HPLC of Formula: 118430-78-7.
New multicomponent domino reactions of arylglyoxals with pyrazol-5-amines have been established, providing selective access to unprecedented pyrazolo-fused 1,7-naphthyridines, 1,3-diazocanes, and pyrroles (up to 52 examples). The unreported dipyrazolo-fused 1,7-naphthyridines were regioselectively synthesized through a special double [3 + 2 + 1] heteroannulation accompanied by direct C-C formation between two electrophilic sites of arylglyoxals [e.g., PhCOCH(OH)2 + 1,3-dimethyl-5-pyrazolamine in presence of TsOH → I (70%)]. The unusual [3 + 3 + 1 + 1] cyclization resulted in 20 examples of novel dipyrazolo-fused 1,3-diazocanes [e.g., PhCOCH(OH)2 + 1-methyl-3-phenyl-5-pyrazolamine in presence of TsOH → II (71%)], whereas pyrrolo[2,3-c]pyrazoles were obtained in good yields by varying arylglyoxals and pyrazol-5-amines in the ratio 1:2 [e.g., PhCOCH(OH)2 + 1-phenyl-3-methyl-5-pyrazolamine in presence of TsOH → III (78%)]. Mechanisms of formation of these three new types of heterocycles are also proposed.
As far as I know, this compound(118430-78-7)HPLC of Formula: 118430-78-7 can be applied in many ways, which is helpful for the development of experiments. Therefore many people are doing relevant researches.
Reference:
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem