Abstract 1,3-Dithianes derivedfrom aromatic, aliphatic, and alicyclicketones or aldehydes can be conveniently converted to the parent carbonyl compounds with a combination of ferric nitrate and silica gel in hexane in excellent to quantitative yields.
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.
Enantioselective Vanadium-Catalyzed Oxidation of 1,3-Dithianes from Aldehydes and Ketones using β-Amino Alcohol Derived Schiff Base Ligands
作者:Yinuo Wu、Fei Mao、Fanchao Meng、Xingshu Li
DOI:10.1002/adsc.201000803
日期:2011.7
and ketones by β‐amino alcohol‐derived Schiffbase ligands with two stereogenic centers was investigated. Usingaqueoushydrogenperoxide as the oxidant and the Schiffbase 3b as a chiral ligand, a variety of 1,3‐dithianes derived from aldehydes were easily converted into the corresponding mono‐sulfoxides in good yields (81–88%) with excellent enantioselectivities (up to 99% ee). Additionally, 99% ee
Thioacetalization of aldehydes and ketones catalyzed by hexabromoacetone
作者:Kittichai Chaiseeda、Warinthorn Chavasiri
DOI:10.1080/10426507.2017.1321646
日期:2017.9.2
min. Aromatic aldehydes or ketones with electron-donating substituents at the ortho or para position increased the yield of the corresponding dithianes, while electron-withdrawing group decelerated the reaction. Aldehydes were easier to protect than ketones, and aliphatic ketones were also more readily protected than aromatic ketones. The protection was highly selective towards an aldehyde compared to