Reactions of alkanesulphonic acid derivatives with organoalkali metal compounds
作者:Y. Shirota、T. Nagai、N. Tokura
DOI:10.1016/s0040-4020(01)82851-9
日期:1969.1
The effects of solvents, metals and structural variation of the substrates on the reactions between alkanesulphonicacid derivatives with organoalkali metal reagents have been examined and the formation and reactivity of α-sulphonylcarbanions are discussed. The formation of 4-membered cyclic sulphones from a sulpbonyl fluoride and the Claisen ester condensation type reaction in a sulphonic ester, which
The reactions of benzylsulfonyl halides with phenyllithium have been studied. The reaction of benzylsulfonyl chloride with phenyllithium in diethyl ether at 20–25° gave lithiumbenzyl sulfinate as a main product, in addition to other eight products. While the reaction of benzylsulfonyl fluoride with phenyllithium under a similar condition afforded a disulfone, α-benzylsulfonyl-α-benzenesulfonyltoluene
Sulfur-Phenolate Exchange As a Fluorine-Free Approach to S(VI) Exchange Chemistry on Sulfonyl Moieties
作者:Alyssa F.J. van den Boom、Muthusamy Subramaniam、Han Zuilhof
DOI:10.1021/acs.orglett.2c03421
日期:2022.12.2
SuFEx chemistry has recently evolved as next-generation click chemistry. However, in most SuFEx syntheses, additional reagents/catalysts and carefully controlled conditions are still needed. Here, we aim to further generalize S(VI) exchange chemistry, using 4-nitrophenyl phenylmethanesulfonate as example, in which the nitrophenolate group is exchanged for a wide range of (substituted) phenols and alkyl
Sulfur-Phenolate Exchange as a Mild, Fast, and High-Yielding Method toward the Synthesis of Sulfonamides
作者:Alyssa F. J. van den Boom、Han Zuilhof
DOI:10.1021/acs.orglett.2c04292
日期:2023.2.10
Sulfonamides have many important biological applications, yet their synthesis often involves long reaction times under dry and non-ambient conditions. Here we report the synthesis of a large range of sulfonamides at room temperature using 4-nitrophenyl benzylsulfonate as a starting material. Sulfonamides were prepared from a wide range of aliphatic, linear, and cyclic amines, anilines, and N-methylanilines
Metal-Free Oxidative Formation of Aryl Esters by Catalytic Coupling of Acyl and Sulfonyl Chlorides with Arylboronic Acids
作者:Fang Liu、Akbar Sohail、Keyume Ablajan
DOI:10.1021/acs.joc.3c01151
日期:2024.1.5
synthesis of arylesters was developed through metal-free oxidation. This reaction employs stable and readily available acyl or sulfonyl chlorides and arylboronicacids as the starting materials and proceeds under mild reaction conditions without additional precious metal catalysts. This new strategy exhibits broad substrate tolerance and operational simplicity and gives diverse arylesters in moderate