A facile, catalyst-free synthesis of diethyl thienylphosphonates under mild conditions without solvent is described. The desired products were obtained, via a Michaelis-Arbuzov-type rearrangement, from various activated thienyl halides by reacting with triethyl phosphite.
Michaelis-Arbuzov rearrangement - phosphorus - heterocycles - thienylphosphonates - halides