名称:
The regioselective and stereospecific substitution of unsymmetrical 1,2-diols using the 1,3,2λ5-dioxaphospholane methodology.
摘要:
Stereospecific tosylate (-OTs) or azide (N3-) substitution at the C-4 stereocenter of a monosubstituted 1,3,2-lambda-5-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.