SEARCH Articles Figures Tables 2.4- Diaza-l,3-diene groups 4- -l,3-dioxolane, to protect carbonyl groups 4- -l,3-dioxolanes, to protect carbonyl groups 5- -l,3-dioxanes, to protect carbonyl groups Analogs of L-Ascorbic Acid Containing One Enolic Hydroxyl Group Benassi, R., Folli. U„ Schenetti, L., Taddei F., The Conformations of Acyl Groups Cyclodec-5-en-l-one point group Group V Arsenic, Antimony and Bismuth By J.L. Wardell 1 Tervalent Compounds L-Oxido-2-pyridylmethyl group Nitrido-bis(triphenylphosphorus)(l) Pentacarbonyl Acetato Group 6 Metal The Groups l)