Formation of phosphorus‐containing cage structures in the reaction of 2‐ethoxyvinylphosphonic acid dichloroanhydride with resorcinol and its derivatives

The scheme of formation of bicyclic phosphonates 3 synthesized on the basis of resorcinol and its derivatives was suggested based on the model reactions of dichloroanhydride 1 with 3-methoxyphenol 7 in the presence of triethylamine with a variable ratio of reagents. Composition and structure of the products obtained were confirmed according to 1H and 31P NMR, IR spectroscopy, elemental analysis, and X-ray analysis. © 2012 Wiley Periodicals, Inc. Heteroatom Chem 23:340–344, 2012; View this article online at wileyonlinelibrary.com. DOI 10.1002/hc.21022