How is 4-(6-Isocyanato-2-pyridinyl)morpholine (CAS: 884507-15-7) typically synthesized?

4-(6-Isocyanato-2-pyridinyl)morpholine is typically synthesized via the reaction of morpholine with 6-aminopyridine in the presence of a suitable amine scavenger. The process involves the formation of an isocyanate intermediate, followed by its reaction with morpholine. The yield is generally high, and the reaction is conducted under basic conditions to ensure good selectivity and yield. Common solvents include DMF or DMSO, and the reaction is monitored using thin-layer chromatography (TLC) to ensure completion.