SEARCH Articles Figures Tables Acetal and ketal Acetals and ketals Acetals and ketals, cyclic monothio, to protect carbonyl groups Acetals and ketals, cyclic to protect carbonyl groups Acetals and ketals, cyclic to protect catechols Acetals and ketals, cyclic to protect diols Acetals cyclic Acetals ketals Cyclic acetalization Cyclic ketal Cyclic monothio acetals and ketals Hemi-acetals and -ketals, cyclic Hemi-acetals and -ketals, cyclic s. Lactols