for the following products
tert-Butyl (2-(2,2-dimethyl-4H-benzo[d][1,3]dioxin-6-yl)-2-oxoethyl)carbamate | tert-Butyl 2-(2,2-dimethyl-4H-1,3-benzodioxin-6-yl | tert-butyl 2-(2,2-dimethyl-4h-1,3-benzodioxin-6-yl)-2-oxoethylcarbamate and Carbamic acid, [2-(2,2-dimethyl-4H-1,3-benzodioxin-6-yl)-2-oxoethyl]-, 1,1-dimethylethyl ester