Asymmetric disubstituted 1-phenoxy-2-vinylcyclopropanes 1 were synthesized either by the esterification of the corresponding 1-alkoxycarbonyl-2-vinylcyclopropane-1-carboxylic acid with phenol or by the reaction of asymmetric malonates with trans-1,4-dibromo-2-butene. The structure of the new vinylcyclopropanes was confirmed by elemental analysis, IR, H-1 NMR and C-13 NMR spectroscopy. The radical polymerization of the asymmetric substituted 2-vinylcyclopropanes in bulk with 2,2＇-azoisobutyronitrile (AlBN) results In transparent polymers. The glass transition temperature of the formed polymers varries between 41 und 61 degrees C.