Clean and Economic Synthesis of Alkanesulfonyl Chlorides from S-Alkyl Isothiourea Salts via Bleach Oxidative Chlorosulfonation
作者:Jiaxi Xu、Zhanhui Yang、Bingnan Zhou
DOI:10.1055/s-0033-1338567
日期:——
Abstract A simple procedure for clean and economic synthesis of alkanesulfonyl chlorides via bleach-mediated oxidative chlorosulfonation of S-alkyl isothiourea salts is disclosed. This procedure is environment- and worker-friendly with the advantages of readily accessible materials and reagents, simple and safe operations, easy purification without chromatography, and affords high yields of up to 99%
Synthesis of difluoromethyl and deuterium-labeled difluoromethyl thioethers from aliphatic electrophiles
作者:Tianqi Ding、Lvqi Jiang、Wenbin Yi
DOI:10.1039/c9cc09709k
日期:——
described. The transition-metal-free approach, readily available reagents, and mild conditions provide a practical way for the synthesis of difluoromethylthioethers. By changing the “H” source to the most commonly used “D” sources CD3OD and D2O, this strategy enables efficient synthesis of SCF2D-substituted molecules in good yields with high levels of D incorporation.
Decyanative Cross-Coupling of Cyanopyrimidines with O-, S-, and N-Nucleophiles: A Route to Alkoxylpyrimidines, Aminopyrimidines and Alkylthiopyrimidines
A cross‐coupling reaction of cyanopyrimidines with aliphaticalcohols, thiols (or S‐alkylisothiourea salts) or amines gives the corresponding alkoxylpyrimidines, aminopyrimidines or alkylthiopyrimidines. The wide substrate scope with excellent yields makes cyanopyrimidines a promising alternative substrate class to the frequently used pyrimidines halides for the formation of C–O, C–S, and C–N bonds
Convenient and Environment-Friendly Synthesis of Sulfonyl Chlorides from S-Alkylisothiourea Salts via N-Chlorosuccinimide Chlorosulfonation
作者:Jiaxi Xu、Zhanhui Yang
DOI:10.1055/s-0033-1338743
日期:——
the byproduct succinimide from ‘waste water’ can be conveniently converted into the starting reagent N-chlorosuccinimide with sodium hypochlorite (bleach) to make the method sustainable. A convenient, practical, and environmentally friendly method for the synthesis of sulfonyl chlorides has been developed. Structurally diverse sulfonyl chlorides were synthesized in moderate to excellent yields from