Abstract
Cyanoacrylates 1 have existed for 40 years, but up till 1 only polymerization processes, effected by various nucleophiles, including trivalent phosphorus compounds, have been known. We have shown that under established conditions 1 (aR=Me, b R=Et) reacts with trivalent phosphorus compounds not only via the anionic polymerization pathway, but depending on the structure, it forms stable adducts2,4 or 5.