553679-93-9Relevant academic research and scientific papers
Synthesis, characterization, and reactivity of novel 6H-1,3,5-oxathiazine S,S-dioxides
Islam, Md. Rafiqul,Takikawa, Yuji,Lim, Kwon Taek
, p. 604 - 609 (2014/06/10)
A series of novel 6H-1,3,5-oxathiazine S,S-dioxides were synthesized by the m-CPBA oxidation (2.2 equiv) of 6H-1,3,5-oxathizines. The synthetic utilities of the newly synthesized cyclic sulfones were investigated. In a thermal condition, compounds 6H-1,3,5-oxathiazine S,S-dioxides were found relatively stable, but Lewis acid-induced thermal reaction afforded the corresponding amides. The plausible pathway to amides from 6H-1,3,5-oxathiazine S,S-dioxides was also discussed in this account.
Novel conversion of 6H-1,3,5-oxathiazine S-oxides into 3H-1,2,4-dithiazoles by treating with Lawesson's reagent
Rafiqul, Islam Md.,Shimada, Kazuaki,Aoyagi, Shigenobu,Fujisawa, Yoriko,Takikawa, Yuji
, p. 208 - 215 (2007/10/03)
Treatment of 6H-1,3,5-oxathiazine S-oxides by Lawesson's reagent (LR) at high temperature furnished 3H-1,2,4-dithiazoles in moderate to good yields. Deoxygenation of 6H-1,3,5-oxathiazine S-oxides was performed by LR in the presence of EtOH.
Novel generation and ring closure of 1,3-thiaza-1,3-butadiene S-oxides through thermal cycloreversion of 6H-1,3,5-oxathiazine S-oxides
Shimada, Kazuaki,Rafiqul, Islam Md.,Sato, Masanobu,Aoyagi, Shigenobu,Takikawa, Yuji
, p. 2517 - 2519 (2007/10/03)
Heating of 6H-1,3,5-oxathiazine S-oxides efficiently afforded 1,2,4-oxathiazoles through the mechanism involving thermal cycloreversion of the substrates and the subsequent ring closure of the intermediary 1,3-thiaza-1,3-butadiene S-oxides.
