Sundar, Ch. Syama published the artcileThe synthesis and bioactivity of dimethyl (2,3-dihydrobenzo[b][1,4]dioxin-6-yl)(arylamino)methylphosphonates, Synthetic Route of 18437-58-6, the publication is Phosphorus, Sulfur and Silicon and the Related Elements (2014), 189(4), 551-557, database is CAplus.
A new series of α-amino phosphonates I (R = aryl) were synthesized by a one-pot, three-component reaction of 2,3-dihydrobenzo[b][1,4]dioxine-6-carboxaldehyde, primary aromatic amines, and HP(O)(OMe)2 by using nano-TiO2 as a catalyst under solvent-free conditions at 50°. Major advantages of the method are high yields, short reaction times, recyclable catalyst, and solvent-free reaction conditions. Among these novel α-amino phosphonates, I (R = 3-O2NC6H4, 4-FC6H3-3-NO2) showed higher antioxidant activity in DPPH scavenging, reducing power assay, and lipid peroxidation
Phosphorus, Sulfur and Silicon and the Related Elements published new progress about 18437-58-6. 18437-58-6 belongs to pyridine-derivatives, auxiliary class Pyridine,Amine, name is 4-Amino-2-picoline, and the molecular formula is C9H17NO, Synthetic Route of 18437-58-6.
Referemce:
https://en.wikipedia.org/wiki/Pyridine,
Pyridine | C5H5N – PubChem