Herein a new synthetic route to 1,2-amino alcohols is presented by using C-H amidation of sp(3) methyl C-Hbonds as a key step. Readily available alcohols were employed as starting materials after converting them to removable ketoxime chelating groups. Iridium catalysts were found to be effective for the C-H amidation, and LAH reduction was then used to furnish beta-amino alcohol products.
bonds has been accomplished through radical translocation and cross-coupling. Upon irradiation with visible light, copper-based photocatalyst [Cu(Xantphos)(dmp)]BF4 enabled cross-coupling of N-alkoxyphthalimides with amino acid esters or amino acids to provide δ-C(sp3)–H alkylated alcohols (31 examples, up to 92% yield) with additive BNDHP or α-C(sp3)–H alkylated alcohols (18 examples, up to 86% yield)
Rhodium(<scp>iii</scp>)-catalyzed directed amidation of unactivated C(sp<sup>3</sup>)–H bonds to afford 1,2-amino alcohol derivatives
作者:Yi Dong、Jiajing Chen、Heng Xu
DOI:10.1039/c8cc05637d
日期:——
A rhodium-catalyzed directed C(sp3)–H amidation to afford 1,2-amino alcohol oxime derivatives has been developed with good yields and a broad substrate scope. In previous methods for this type of reaction, 1-arylethan-1-ol oxime analogues were challenging substrates owing to strong competition fromC(sp2)–H bondactivation. This Rh-catalyzed C–H activation method overcomes the limitation of competitive
Deoxyalkoxyamination of Alcohols for the Synthesis of <i>N</i>
-Alkoxy-<i>N</i>
-alkylbenzenesulfonamides
作者:Qi-An Sun、Ze-Hai Lu、Xiao-Qiu Pu、Hui-Lian Hu、Jia-heng Zhang、Xian-Jin Yang
DOI:10.1002/ejoc.201800526
日期:2018.8.7
A novel protocol for deoxyalkoxyamination of alcohols was developed, accessing a diverse range of N‐alkoxy‐N‐alkylbenzenesulfonamides.
开发了一种用于醇的脱氧烷氧基胺化的新方案,可以使用各种N-烷氧基-N-烷基苯磺酰胺。
Control of parasites in animals by the use of novel trifluoromethanesulfonanilide oxime ether derivatives
申请人:Meyer Gerhard Adam
公开号:US20060063841A1
公开(公告)日:2006-03-23
Novel trifluoromethanesulfonanilide oxime ether compounds useful for controlling endo and/or ectoparasites in the environment are provided, together with methods of making the same, and methods of using the inventive compounds to treat parasite infestations in vivo or ex vivo.