Synthesis of Sulfonyl Azides via Lewis Base Activation of Sulfonyl Fluorides and Trimethylsilyl Azide
作者:John Moses、Andrew Barrow
DOI:10.1055/s-0035-1561626
日期:——
A protocol for the efficient conversion of sulfonyl fluorides into sulfonyl azides through Lewis base activation is described. The in situ generated sulfonyl azides are efficient diazo-transfer agents, affording diazo compounds and primary azides in excellent yields.
The first metal-free procedure for the synthesis of arylsulfonyl fluorides is reported. Under organo-photoredox conditions, aryl diazonium salts react with a readily available SO2 source (DABSO) to afford the desired product through simple nucleophilic fluorination. The reaction tolerates the presence of both electron-rich and -poor aryls and demonstrated a broad functional group tolerance. To shed
报道了合成芳基磺酰氟的第一个无金属程序。在有机光氧化还原条件下,芳基重氮盐与容易获得的 SO 2源 (DABSO)反应,通过简单的亲核氟化得到所需的产物。该反应耐受富电子和贫电子芳基的存在,并表现出广泛的官能团耐受性。为了阐明反应机理,结合了几种实验技术,包括荧光、核磁共振和 EPR 光谱以及 DFT 计算。
Efficient synthesis of α-(fluoro/chloro/methoxy)disulfonylmethane derivatives as tunable substituted methyl synthons via a new C–S bond forming strategy
作者:G.K. Surya Prakash、Fang Wang、Chuanfa Ni、Tito Joe Thomas、George A. Olah
DOI:10.1016/j.jfluchem.2010.07.006
日期:2010.10
A new synthetic protocol for the preparation of α-fluoro(disulfonyl)methane and its chloro as well as methoxy analogues has been developed. Due to the synthetic utility of α-fluoro(bisphenylsulfonyl)methane (FBSM) as a versatilesynthon in the preparation of various useful fluoromethylated organic molecules, search for an easy and economic for its preparation route has been essential. The C–S bond
Catalyst-free radical fluorination of sulfonyl hydrazides in water
作者:Lin Tang、Yu Yang、Lixian Wen、Xingkun Yang、Zhiyong Wang
DOI:10.1039/c5gc02755a
日期:——
The first catalyst-free fluorination of sulfonyl hydrazides for the synthesis of sulfonyl fluorides via a free-radical process has been developed.
对磺酰基腙进行的首次无催化氟化反应,通过自由基过程合成磺酰氟化物。
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