A catalyst don’t appear in the overall stoichiometry of the reaction it catalyzes, COA of Formula: C3H8O2, but it must appear in at least one of the elementary reactions in the mechanism for the catalyzed reaction. COA of Formula: C3H8O2, Name is (S)-Propane-1,2-diol, molecular formula is C3H8O2. In a Article, authors is Rebiere, F.£¬once mentioned of COA of Formula: C3H8O2
A General Route to Enantiomerically Pure Sulfoxides from a Chiral Sulfite
Enantiomerically pure cyclic chiral sulfite (S)-7 (trans stereochemistry) has been easily obtained in two steps from (S)-ethyl lactate.This compound was found to react cleanly with many organometallics to give crystalline sulfinates with high regioselectivity (>90:10).Addition of a second organometallic transforms the purified sulfinate in excellent yield into a chiral sulfoxide (100percent ee) of predictable absolute configuration.The mechanism and scope of this approach are discussed.This method completes the various other methdos of preparation of chiral sulfoxides and is especially convenient for the preparation of tert-butyl sulfoxides.Examples for the synthesis of many chiral tert-butyl sulfoxides are given.The case of chiral sulfites derived from a C2 diol or of a chiral monoalcohol is also proposed as a route to chiral sulfinates, and some promising preliminary results have been obtained.The general main route to obtain chiral sulfoxides from sulfites are also discussed.
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Reference£º
Synthesis and Crystal Structure of a Chiral?C3-Symmetric Oxygen Tripodal Ligand and Its Applications to Asymmetric Catalysis,
Chiral lanthanide(III) complexes of sulphur¨Cnitrogen¨Coxygen ligand derived from aminothiourea and sodium?D-camphor-¦Â-sulfonate