Vicinal Diamination of Arenes with Domino Aryne Precursors
摘要:
Vicinal diamination of domino aryne precursors was achieved with sulfamides. The reaction proceeds through a two-aryne pathway, accepting two N-nucleophiles at the 1,2-positions of an arene ring. Symmetrical and unsymmetrical diaminobenzenes were readily obtained.
DABCO-<i>Bis</i>(sulfur dioxide), DABSO, as a Convenient Source of Sulfur Dioxide for Organic Synthesis: Utility in Sulfonamide and Sulfamide Preparation
作者:Holly Woolven、Carlos González-Rodríguez、Isabel Marco、Amber L. Thompson、Michael C. Willis
DOI:10.1021/ol201957n
日期:2011.9.16
The charge-transfer complex generated from the combination of DABCO and sulfur dioxide, DABSO, is a bench-stable colorless solid suitable for use in organic synthesis as a replacement for gaseous sulfur dioxide. The complex can be combined with Grignard reagents to form sulfinates, which can then be converted in situ to a series of sulfonamides. Alternatively, reaction with anilines and iodine leads
Design and Applications of a SO
<sub>2</sub>
Surrogate in Palladium‐Catalyzed Direct Aminosulfonylation between Aryl Iodides and Amines
作者:Xiuwen Jia、Søren Kramer、Troels Skrydstrup、Zhong Lian
DOI:10.1002/anie.202014111
日期:2021.3.22
reactions proceeded smoothly by ex situ formation of SO2 by utilizing a two‐chamber system in combination with the SO2 surrogate. Furthermore, we report the first direct aminosulfonylation between aryliodides and amines. Broad functional group tolerance is demonstrated, and the method is applicable to pharmaceutically relevant substrates, including heterocyclic substrates.
Sulfamides and sulfamide polymers directly from sulfur dioxide
作者:Alexander V. Leontiev、H. V. Rasika Dias、Dmitry M. Rudkevich
DOI:10.1039/b605063h
日期:——
SO2 gas is effectively used for the preparation of N,N′-diarylsulfamides and shape-persistent sulfamide polymers, which utilize a network of intermolecular N–H⋯OS hydrogen bonds to self-assemble into soft porous materials.