A method of curing a curable composition, the method comprising: a) providing the curable composition, wherein the curable composition comprises: at least one free-radically polymerizable compound; and a beta-dicarbonyl compound represented by the formula or a salt thereof, wherein: X 1 and X 2 independently represent a covalent bond, O, S, or wherein each R 4 independently represents H or alkyl having from 1 to 18 carbon atoms, R 1 and R 2 independently represent a hydrocarbyl or substituted-hydrocarbyl group having from 1 to 18 carbon atoms, R 3 represents hydrogen, or a hydrocarbyl or substituted-hydrocarbyl group having from 1 to 18 carbon atoms, or taken together any two of R 1, R 2, or R 3 form a five-membered or six-membered ring; and b) providing a glass substrate having a primer layer disposed on at least a portion thereof, wherein the primer layer comprises at least one polyvalent metal compound for free-radically curing the curable composition immobilized in a binder material; c) contacting the curable composition with at least a portion of the primer layer, thereby causing at least partial curing of the curable composition. a) providing the curable composition, wherein the curable composition comprises: at least one free-radically polymerizable compound; and a beta-dicarbonyl compound represented by the formula or a salt thereof, wherein: X 1 and X 2 independently represent a covalent bond, O, S, or wherein each R 4 independently represents H or alkyl having from 1 to 18 carbon atoms, R 1 and R 2 independently represent a hydrocarbyl or substituted-hydrocarbyl group having from 1 to 18 carbon atoms, R 3 represents hydrogen, or a hydrocarbyl or substituted-hydrocarbyl group having from 1 to 18 carbon atoms, or taken together any two of R 1, R 2, or R 3 form a five-membered or six-membered ring; and at least one free-radically polymerizable compound; and a beta-dicarbonyl compound represented by the formula or a salt thereof, wherein: X 1 and X 2 independently represent a covalent bond, O, S, or wherein each R 4 independently represents H or alkyl having from 1 to 18 carbon atoms, R 1 and R 2 independently represent a hydrocarbyl or substituted-hydrocarbyl group having from 1 to 18 carbon atoms, R 3 represents hydrogen, or a hydrocarbyl or substituted-hydrocarbyl group having from 1 to 18 carbon atoms, or taken together any two of R 1, R 2, or R 3 form a five-membered or six-membered ring; and X 1 and X 2 independently represent a covalent bond, O, S, or wherein each R 4 independently represents H or alkyl having from 1 to 18 carbon atoms, R 1 and R 2 independently represent a hydrocarbyl or substituted-hydrocarbyl group having from 1 to 18 carbon atoms, R 3 represents hydrogen, or a hydrocarbyl or substituted-hydrocarbyl group having from 1 to 18 carbon atoms, or taken together any two of R 1, R 2, or R 3 form a five-membered or six-membered ring; and b) providing a glass substrate having a primer layer disposed on at least a portion thereof, wherein the primer layer comprises at least one polyvalent metal compound for free-radically curing the curable composition immobilized in a binder material; c) contacting the curable composition with at least a portion of the primer layer, thereby causing at least partial curing of the curable composition.