Preparation of α-Sulfonylethanone Oximes from Oxidized Hydroxylamine
作者:Nan Liu、Ping Yin、Yue Chen、Yong Deng、Ling He
DOI:10.1002/ejoc.201200133
日期:2012.5
Alkenes react with substituted N-hydroxysulfonamides and tetrabutylammonium periodate under metal catalyst free conditions to give oximes in good to high yields. The reaction proceeds in a one-pot manner, giving rise to the formation of intermolecular C–N and C–S bonds simultaneously. The method is mild, highly efficient, and convenient.
A Straightforward Route to Piloty’s Acid Derivatives: A Class of Potential Nitroxyl-Generating Prodrugs
作者:Andrea Porcheddu、Lidia De Luca、Giampaolo Giacomelli
DOI:10.1055/s-0029-1217565
日期:2009.8
A series of Piloty’s acid derivatives were easily prepared under mild and neutral conditions. The ease of isolation of the final product offers a marked advantage over well-known procedures. This methodology is particularly attractive as it cleanly provided low molecular weight aliphatic sulfohydroxamic acids, which are very interesting for their tendency to generate HNO under physiological conditions.
sulfonamides as sulfenylating agents has been established. In the presence of catalytic amounts of iodine and N-hydroxysuccinimide, N-hydroxy sulfonamides participated in sulfenylation with indoles, 7-azaindole, N-methyl pyrrole, and 2-naphthol to afford structurally diverse thioethers in moderate to excellent yields with very high regioselectivity.
An iodine-mediated new avenue to sulfonylation employing <i>N</i>-hydroxy aryl sulfonamide as a sulfonylating agent
作者:Dushyant Singh Raghuvanshi、Narsingh Verma
DOI:10.1039/d1ob00036e
日期:——
A novel and highly efficient I2/K2CO3 mediated regioselective sulfonylation of thiophenols, aryl acetylenic acid and aromatic alkynes with N-hydroxy sulfonamide has been developed.