Chiral Ammonium Betaines: A Bifunctional Organic Base Catalyst for Asymmetric Mannich-Type Reaction of α-Nitrocarboxylates Daisuke Uraguchi Kyohei Koshimoto Takashi Ooi 10.1021/ja8041004.s001 https://acs.figshare.com/articles/journal_contribution/Chiral_Ammonium_Betaines_A_Bifunctional_Organic_Base_Catalyst_for_Asymmetric_Mannich_Type_Reaction_of_Nitrocarboxylates/2919886 Chiral Ammonium Betaines: A Bifunctional Organic Base Catalyst for Asymmetric Mannich-Type Reaction of α-Nitrocarboxylates 2008-08-20 00:00:00 Nitrocarboxylate Asymmetric Chiral Ammonium Betaines Bifunctional Organic Base Catalyst NitrocarboxylatesChiral