3708-04-1Relevant articles and documents
PREFERRED CONFORMATIONS OF METHYLTHIO-ACETONE AND -ACETOPHENONE, METHYLSULPHONYL-ACETONE AND -ACETOPHENONE, FROM MOLECULAR-MECHANICS AND DIPOLE-MOMENT TECHNIQUES
Lumbroso, H.,Bertin, D. M.,Olivato, P. R.,Bonfada, E.,Mondino, M. G.,Hase, Y.
, p. 113 - 122 (1989)
Preferred conformations for the title compounds are determined from calculated molecular-mechanics energies in the gaseous phase and analysis of the dipole moments measured in solvents of low dielectric permittivity.In all cases, the gauche conformer having the Me-S bond situated far away from the Me(-C) (or Ph(-C)) group, and nearly bisecting one of the C(=O)-C-H valleys, is predominant.
Oxidant-free C-H sulfonylation of enamides: Electrochemical synthesis of β-amidovinyl and carbonyl sulfones from sulfonyl hydrazide and enamides
Qi, Liang,Xiao, Linxia,Chen, Xi,Zhang, Ziyi,Shi, Qin,Chen, Jinkang
supporting information, (2021/12/17)
A mild, practical, eco-friendly and environmentally friendly electrochemical synthesis method of β-aminovinyl sulfone and carbonyl sulfones from sulfonyl hydrazide and enamides has been developed. This transformation only requires electrolytes and solvent, thus avoids transition metal catalysts, stoichiometric oxidant and base. Two different types of sulfone derivatives can be obtained only by changing the reaction solvent. This transformation also features mild conditions (room temperature, air), broad substrate scopes, and excellent stereoselectivities in mild to good yield.
Photosensitizer-free synthesis of β-keto sulfones: Via visible-light-induced oxysulfonylation of alkenes with sulfonic acids
Hong, Yun-Yun,Peng, Sha,Peng, Zhen,Tang, Shan-Shan,Xie, Long-Yong,Xu, Xiang-Qun,Yang, Li-Hua
supporting information, p. 4537 - 4541 (2021/05/31)
A practical and environment-friendly methodology for the construction of β-keto sulfones through visible-light induced direct oxysulfonylation of alkenes with sulfonic acids at ambient temperature under open-air conditions was developed. Most importantly, the reaction proceeded smoothly without the addition of any photocatalyst or strong oxidant, ultimately minimizing the production of chemical waste.
