Electric Literature of 4254-15-3, Chemistry is a science major with cience and engineering. The main research directions are chemical synthesis, new energy materials, nano-ceramics, nano-hybrid composite materials, preparation and modification of special coatings. 4254-15-3, Name is (S)-Propane-1,2-diol,introducing its new discovery.
The regioselective and stereospecific substitution of unsymmetrical 1,2-diols using the 1,3,2lambda5-dioxaphospholane methodology
Stereo specific tosylate (-OTs) or azide (N3-) substitution at the C-4 stereocenter of a monosubstituted 1,3,2lambda5-dioxaphospholane (the equivalent of the C-2 stereocenter in an unsymmetrical 1,2-diol) is readily achieved by treatment with either P-toluenesulfonic acid (P-TsOH) in tetrahydrofuran solvent or P-TsOH/sodium azide in acetonitrile solvent, respectively.
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Reference：
Synthesis and Crystal Structure of a Chiral C3-Symmetric Oxygen Tripodal Ligand and Its Applications to Asymmetric Catalysis,
Chiral lanthanide(III) complexes of sulphur–nitrogen–oxygen ligand derived from aminothiourea and sodium D-camphor-β-sulfonate