Cleavage of 1,3-Dithianes via Acid-Catalyzed Hydrolysis of the Corresponding 1,3-Dithianemonooxides
作者:Karsten Krohn、Stephan Cludius-Brandt
DOI:10.1055/s-2008-1067164
日期:2008.8
The hydrolysis of 1,3-dithianes to their parent carbonyl compounds via their corresponding monosulfoxides was systemati- cally investigated. The oxidation of the 1,3-dithianes was carried out in high yields using tert-butyl hydroperoxide. Acid-catalyzedhydrolysis of the monosulfoxides to the carbonyl compounds was then performed in excellent yields. The cleavage reactions were monitored by gas chromatography
Highly Efficient Regeneration of Carbonyl Compounds from Oximes, Tosylhydrazones, 1,3-Dithiolanes, and 1,3-Dithianes Using Cupric Nitrate Supported on Silica Gel
作者:Jong Gun Lee、Je Pil Hwang
DOI:10.1246/cl.1995.507
日期:1995.7
Cupric nitrate supported in silica gel is exceptionally efficient in regenerating aldehydes and ketonesfrom oximes, tosylhydrazones, 1,3-dithiolanes, and 1,3-dithianes.
Solution ion pair structure of 2-lithio-1,3-dithianes in THF and THF-HMPA
作者:Hans J. Reich、Joseph P. Borst、Robert R. Dykstra
DOI:10.1016/s0040-4020(01)90442-9
日期:1994.1
An NMR study of 2-lithio-1,3-dithiane and 2-triorganosilyl-, 2-tert-butyl- and 2-phenyl-2-lithiodithianes reveals that all are contact ionpair species in THF and all become separated ions with excess HMPA. The dithianes differ greatly in their ease of ion separation, with the parent lithiodithiane the most difficult.