A divergent synthesis of cyclitolderivatives has been developed utilizing an N‐heterocyclic carbene‐catalyzed benzoin‐type cyclization of C2‐symmetrical dialdoses. The resulting inososes are versatile intermediates, which are readily converted into not only inositols but also amino‐, deoxy‐, O‐methyl‐ and C‐methyl‐inositols.
Silver(I) Oxide Mediated Highly Selective Monotosylation of Symmetrical Diols. Application to the Synthesis of Polysubstituted Cyclic Ethers
作者:Abderrahim Bouzide、Gilles Sauvé
DOI:10.1021/ol020071y
日期:2002.7.1
symmetrical diols and oligo(ethylene glycol)s with a stoichiometric amount of p-toluenesulfonyl chloride in the presence of silver(I) oxide and a catalytic amount of potassium iodide led selectively to the monotosylate derivatives in high yields. Polysubstituted cyclic ethers were obtained readily upon treatment of the corresponding diols with an excess of silveroxide. The high selectivity was explained