893752-56-2Relevant articles and documents
Stereoselective synthesis of 9-vinyl substituted unsymmetrical xanthenes and thioxanthenes
Prajapati, Anamika,Kumar, Mahendra,Thakuria, Ranjit,Basak, Ashok K.
supporting information, (2020/08/19)
Activated 2°-allylic alcohols derived from 2-aryloxybenzaldehydes and 2-(arythio)benzaldehydes undergo intramolecular Friedel-Crafts alkylation reaction when heated with catalytic amount of a Lewis acid in 1,2-dichloroethane to provide highly E-selective 9-vinyl substituted unsymmetrical novel xanthenes and thioxanthenes in good yields.
Tert -Butoxide mediated cascade desulfonylation/arylation/hydrolysis of cyclic sulfonyimines using diaryliodonium salts: Synthesis of diaryl ether derivatives bearing a 2-aldehyde group
Qian, Xiaofei,Han, Jianwei,Wang, Limin
, p. 89234 - 89237 (2016/10/03)
Cascades of cyclic sulfonyimines mediated by tBuOK with diaryliodonium salts has been developed, giving the diaryl ethers in good yields. Furthermore, bulky ortho-substituted diaryl ethers with an aldehyde group can be obtained easily in comparision with metal-catalyzed protocols.
Cross dehydrogenative coupling via base-promoted homolytic aromatic substitution (BHAS): Synthesis of fluorenones and xanthones
Wertz, Sebastian,Leifert, Dirk,Studer, Armido
supporting information, p. 928 - 931 (2013/03/28)
Cross dehydrogenative coupling reactions occurring via base-promoted homolytic aromatic substitutions (BHASs) are reported. Fluorenones and xanthones are readily prepared via CDC starting with readily available ortho-formyl biphenyls and ortho-formyl biphenylethers, respectively. The commercially available and cheap tBuOOH is used as an oxidant. Initiation of the radical chain reaction is best achieved with small amounts of FeCp2 (0.1 or 1 mol %).