A New Synthesis of Dialkoxymethane. The Magnetic Nonequivalence of Methylene Protons in Certain Dialkoxymethane
作者:Takeo Sato、Yoshitaka Saito、Masatsune Kainosho、Kazuo Hata
DOI:10.1246/bcsj.40.391
日期:1967.2
in 50—80 and 30—40% yields respectively. Dimethyl disulfide, bis(methylthio) methane and methylthiomethyl ether and an oxidation product of the alcohol have been shown to be the main by-products in this reaction. The examination of the NMR spectra has revealed that the acetal methyleneprotons of dialkoxymethanes made from (±)-secondary alcohols are observed as an AB quartet and as a singlet, each
Silicon in synthesis: The use of trimethylsilyl cyanide for the synthesis of aliphatic cyanomethylethers
作者:James A. Schwindeman、Philip D. Magnus
DOI:10.1016/s0040-4039(01)92383-4
日期:1981.1
The conversion of aliphatic alcohols into cyanomethyl ethers treatment of methyl sulfoxymethyl ethers with trimethylsilylcyanide - zinc iodide is described.
Oxidation of alcohols by “activated” dimethyl sulfoxide. a preparative, steric and mechanistic study
作者:Kanji Omura、Daniel Swern
DOI:10.1016/0040-4020(78)80197-5
日期:1978.1
and bicyclic alcohols with dimethyl sulfoxide (DMSO) “activated” by numerous electrophiles was studied: yields of carbonyls, by-products and recovered alcohols were quantitatively determined. Pathways for carbonyl and by-product formation are presented. Generally, yields of carbonyls increase with increased sterichindrance in the alcohols. Steric effects of tertiary amines, used for basification, were
The Reaction of Benzylic Alcohols with Dimethyl Sulfoxide-Polyphosphoric Acid
作者:Takeo Sato、Akihiko Takatsu、Yoshitaka Saito、Takafumi Tohyama、Kazuo Hata
DOI:10.1246/bcsj.41.221
日期:1968.1
The reaction of dimethyl sulfoxide-polyphosphoric acid mixture with benzylic alcohols has been shown to afford a complex mixture of the products; this is in contrast to the case of aliphatic alcohols, which yield the corresponding acetal as the major product. By carrying out reactions using several benzylic alcohols and a series of benzyl alcohols, it was found that, in addition to the acetal formation