Continuous flow synthesis of aryl aldehydes by Pd-catalyzed formylation of phenol-derived aryl fluorosulfonates using syngas
作者:Manuel Köckinger、Paul Hanselmann、Guixian Hu、Christopher A. Hone、C. Oliver Kappe
DOI:10.1039/d0ra04629a
日期:——
palladium-catalyzed reductive carbonylation of aryl fluorosulfonates (ArOSO2F) using syngas as an inexpensive and sustainable source of carbon monoxide and hydrogen. The conversion of phenols to aryl fluorosulfonates can be conveniently achieved by employing the inexpensive commodity chemical sulfuryl fluoride (SO2F2) and base. The developed continuousflow formylation protocol requires relatively low loadings for palladium
Synthesis of <i>N</i>-Acyl Sulfamates from Fluorosulfonates and Potassium Trimethylsilyloxyl Imidates
作者:Shuning Zhang、Huan Xiong、Fengping Lu、Fei Ma、Yuang Gu、Peixiang Ma、Hongtao Xu、Guang Yang
DOI:10.1021/acs.joc.9b02394
日期:2019.12.6
An efficient and operationally simple method for the synthesis of N-acyl sulfamates from fluorosulfonates and potassium trimethylsilyloxyl imidates as amide precursor is reported. This approach showed broad substrate scope, mild and base-free reaction conditions, short reaction time, and high to excellent yields. Notably, we demonstrated the power of this reaction in the rapid late-stage functionalization
A Broad‐Spectrum Catalytic Amidation of Sulfonyl Fluorides and Fluorosulfates**
作者:Mingjie Wei、Dacheng Liang、Xiaohui Cao、Wenjun Luo、Guojian Ma、Zeyuan Liu、Le Li
DOI:10.1002/anie.202013976
日期:2021.3.22
A broad‐spectrum, catalytic method has been developed for the synthesis of sulfonamides and sulfamates. With the activation by the combination of a catalytic amount of 1‐hydroxybenzotriazole (HOBt) and silicon additives, amidations of sulfonyl fluorides and fluorosulfates proceeded smoothly and excellent yields were generally obtained (87–99 %). Noticeably, this protocol is particularly efficient for
Palladium-Catalyzed Fluorosulfonylvinylation of Organic Iodides
作者:Gao-Feng Zha、Qinheng Zheng、Jing Leng、Peng Wu、Hua-Li Qin、K. Barry Sharpless
DOI:10.1002/anie.201701162
日期:2017.4.18
A palladium‐catalyzed fluorosulfonylvinylation reaction of organiciodides is described. Catalytic Pd(OAc)2 with a stoichiometric amount of silver(I) trifluoroacetate enables the coupling process between either an (hetero)aryl or alkenyl iodide with ethenesulfonyl fluoride (ESF). The method is demonstrated in the successful syntheses of eighty‐eight otherwise difficult to access compounds, in up to
phenyl)-1H-pyrazole-1-sulfonate exhibited excellent anti-inflammatory activity (% inhibition of auricular edemas = 27.0 and 35.9, respectively); the in vivo analgesic activity of phenyl 5-methyl-3-(p-tolyl)-1H-pyrazole-1-sulfonate and 2-chlorophenyl 5-methyl-3-(p-tolyl)-1H-pyrazole-1-sulfonate was confirmed to be effective (inhibition ratio of writhing = 50.7% and 48.5% separately), and compounds phenyl 5-