4'-bromo-5-(5,5-dimethyl-1,3-dioxan-2-yl)valerophenone

4'-Chloro-3-(1,3-dioxan-2-yl)propiophenone

5-(5,5-dimethyl-1,3-dioxan-2-yl)-3'-fluorovalerophenone

4-(5,5-dimethyl-1,3-dioxan-2-yl)-4'-nitrobutyrophenone

4-(5,5-dimethyl-1,3-dioxan-2-yl)-4'-methoxybutyrophenone

4-(5,5-dimethyl-1,3-dioxan-2-yl)-3'-trifluoromethylbutyrophenone

4-(5,5-dimethyl-1,3-dioxan-2-yl)-3',5'-dimethyl-4'-methoxybutyrophenone

2',3'-difluoro-5-(5,5-dimethyl-1,3-dioxan-2-yl)valerophenone

2',6'-difluoro-5-(5,5-dimethyl-1,3-dioxan-2-yl)valerophenone

3',5'-Difluoro-3-(1,3-dioxan-2-yl)propiophenone

4-(5,5-dimethyl-1,3-dioxan-2-yl)-4'-ethylbutyrophenone