65956-55-0Relevant articles and documents
A Route to O-Aminosulfonates and Sulfonamides through Insertion of Sulfur Dioxide and Hydrogen Atom Transfer
Liu, Tong,Zheng, Danqing,Li, Zhenhua,Wu, Jie
, p. 2653 - 2659 (2017/08/16)
A three-component reaction of aryldiazonium tetrafluoroborates, the 1,4-diazabicyclo[2.2.2]octane?bis(sulfur dioxide) adduct [DABCO?(SO2)2] and hydroxylamines under catalyst-free and additive-free conditions has been developed, providing aryl O-aminosulfonates in good yields. Sulfonamides could also be obtained via a one-pot process through the reaction of aryldiazonium tetrafluoroborates, DABCO?(SO2)2 and amines in the presence of N-hydroxybenzotriazole. A mechanism involving the insertion of sulfur dioxide and hydrogen atom transfer is proposed and supported by theoretical calculations. (Figure presented.).
Aluminium chloride-2-isocyanatobenzoyl chloride complex: Crystal structure and reactivity
Bigi, Franca,Sartori, Giovanni,Maggi, Raimondo,Valerio-Papa, Claudia,Marzi, Elena,Lanfranchi, Maurizio,Pellinghelli, Maria Angela
, p. 1815 - 1818 (2007/10/03)
2-Amino-2′-hydroxybenzophenones 3 have been synthesized by acylation of phenols with 2-isocyanatobenzoyl chloride 2 in the presence of aluminium trichloride. The ring-chain tautomerism of the reagent 2 promoted by Lewis acid has been established on the basis of a crystal structure analysis of the 1:1 complex formed by 2 and aluminium trichloride.