Treatment of a series of 4-benzylsulfanyl-1,3-diols with TsCl in pyridine gives substituted 3-hydroxy-thiolanes in high yield by 1,4-SBn participation and debenzylation with chloride ion. The reaction is stereospecific at three stereogenic centres, and relatively insensitive to structure.
An efficient synthesis of functionalized urethanes from azides
作者:Arun K. Ghosh、Sean P. McKee、Tien T. Duong、Wayne J. Thompson
DOI:10.1039/c39920001308
日期:——
Catalytic hydrogenation of various azides in the presence of functionalized mixed carbonates afforded the corresponding urethanes in high yields.
在功能化混合碳酸盐存在下,对各种叠氮化合物进行催化氢化反应,得到相应的氨基甲酸酯,产率很高。
The scope and limitation of the [1,4]-Sbenzyl participation and debenzylation in the stereochemically controlled synthesis of substituted thiolanes
作者:Jason Eames、Nikolai Kuhnert、Stuart Warren
DOI:10.1039/b102737a
日期:——
Treatment of a series of 4-benzylsulfanyl-1,3-diols with toluene-p-sulfonyl chloride in pyridine gave substituted thiolanes in high yield by [1,4]-SBn participation and debenzylation with the chloride anion. The reaction is stereospecific giving up to three contiguous stereogenic centres and occurs efficiently irrespective of the stereochemistry.