3-Phenoxy ring-substituted ethyl phenylcyanoacrylate (PCA) is reported in synthesis of tetrazoles ; in the process for preparation of unsaturated carbonyl compounds via lipasecatalyzed and via triazine-based microporous network Knoevenagel condensations ; in imidazolium chloride immobilized SBA-15 catalyzed condensation ; in synthesis of pharmaceutically active pyranochromene compounds useful as antiviral agents . 3-Phenoxy ring-substituted ethyl PCA is involved in DBU-mediated annulations of donor-acceptor cyclopropanes with 3-aryl-2-cyanoacrylates for the synthesis of fully substituted anilines ; in studies on quinolin-2(1H)-one derivatives in synthesis of pyrano quinoline and 3-substituted quinoline derivatives ; in radical copolymerization with styrene ; in synergistic NaBH4 reduction/cyclization of 2aroylcyclopropane-1-carboxylates leading to synthesis of 3-oxabicyclo[3.1.0]hexane derivatives ; in synthesis of azaindazoles as Btk kinase modulators . Methyl, isopropyl, and butyl PCA were prepared and copolymerized with styrene . 3-(Trifluoromethyl)phenoxy ethyl PCA is reported in preparation of amino(phenyl)alkanoic acid derivatives, addition salts thereof, and sphingosine-1-phosphate (S1P) receptor modulators ; in preparation of diaryl ether derivatives as immunosuppressants . 4-Benzyl ethyl PCA is involved in synthesis, biological evaluation and molecular modeling studies of arylidene-thiazolidinediones with potential hypoglycemic and hypolipidemic activities ; in multi-step synthesis of analytically pure α,β-unsaturated compounds in miniaturized flow reactors ; in synthesis of 1,3,5-trisubstituted-2thioxoimidazolidinones ; in preparation of (alkoxybenzyl)pyrrolidinone derivatives as nootropics .