Figure 5
The core structures for the database survey; (a) 4-alkoxy-2-methyl-4-(2-methyl-1,3-dioxolan-4-yl)but-2-enoate, (b) 2-amino-2-trichloromethyl-1,3-dioxolane, and its (c) -1,3-oxathiolane and (d) -1,3-dioxane derivatives instead of the 1,3-dioxolane ring. |