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 Continuous-Flow Pd-Catalyzed Carbonylation of Aryl Chlorides with Carbon Monoxide at Elevated Temperature and Pressure, published in 2019, which mentions a compound: 39977-42-9, mainly applied to ester aryl preparation continuous flow; aryl chloride carbon monoxide methoxycarbonylation palladium catalyst; (hetero)aryl chlorides; Pd-catalyzed; carbon monoxide; carbonylation; continuous flow; gas-liquid transformation, HPLC of Formula: 39977-42-9.
The development of a continuous-flow protocol for a palladium-catalyzed methoxycarbonylation of (hetero)aryl chlorides RCl (R = 4-cyanophenyl, quinolin-2-yl, pyrazin-2-yl, etc.) using carbon monoxide gas and methanol is described. (Hetero)aryl chlorides are the least expensive of the aryl halides, but are underutilized in carbonylation reactions due to their very poor reactivity. The described protocol exploits intensified conditions at elevated temperature and pressure, which are readily accessed within a continuous-flow environment, to provide moderate to excellent product yields RC(O)OCH3 (11 examples) in a short 16 min residence time. The continuous-flow protocol enables the safe and potentially scalable carbonylation of aryl chlorides using CO gas.
If you want to learn more about this compound(Methyl 5-(hydroxymethyl)picolinate)HPLC of Formula: 39977-42-9, you may wish to communicate with the author of the article,or consult the relevant literature related to this compound(39977-42-9).
Reference:
Pyridazine – Wikipedia,
Pyridazine | C4H4N2 – PubChem