2-Chloro-5-(chloromethyl)pyridine

2-Chloro-5-chloromethylpyridine is used for the synthesis of various pharmaceutical compounds. It can also be used for the synthesis of new neonicotinoid compounds¹, having insecticidal activity. It is the raw material of pesticide products such as imidacloprid, acetamiprid as well as bactericide and herbicide^2,3.

2-Chloro-5-(chloromethyl)pyridine, C6H5Cl2N, is almost planar, with an r.m.s. deviation of 0.0146 Å for all atoms except for the 5-choloromethyl Cl atom. The offset Cl atom lies above this plane with a Cl—C—C angle of 111.11 (17)°. In the crystal, mol­ecules are connected via inter­molecular C—H⋯N hydrogen bonds, forming dimers. The crystals were obtained by dissolving 2-Chloro-5-(chloromethyl)pyridine (0.2 g, 1.2 mmol) in ethanol (25 ml) and evaporating the solvent slowly at room temperature for about 5 d[1].

1. https://www.alfa.com/en/catalog/L19284/
2. https://www.trc-canada.com/product-detail/?C364715
3. www.szqhbio.com/wap_news_detailen/id/1.htm

beige moist crystals

2-Chloro-5-(chloromethyl)pyridine is used for the synthesis of various pharmaceutical compounds. It can also be used for the synthesis of new neonicotinoid compounds.

[1] Zhi-Qiang Feng. “2-Chloro-5-(chloro-meth-yl)pyridine.” Acta crystallographica. Section E, Structure reports online 67 Pt 2 (2011): o366.