已经探索了一种有吸引力的钯催化的烯丙基醚的还原氨基羰基化反应,用于合成 3-alkenylquinolin-2(1 H )-one 衍生物。以Mo(CO) 6作为CO 替代物和还原剂,以邻硝基苯甲醛为氮源,由邻碘苯酚衍生的烯丙基醚以良好至优异的收率获得了多种3-alkenylquinolin-2(1 H )-one . 该反应通过级联途径进行,不依赖于以前的烯丙基羰基化反应所需的高压 CO 气体。该策略为构建 3-alkenylquinolin-2(1 H )-ones 提供了新途径。
Alkyne Aminopalladation/Heck and Suzuki Cascades: An Approach to Tetrasubstituted Enamines
作者:Finn J. Geffers、Florens R. Kurth、Peter G. Jones、Daniel B. Werz
DOI:10.1002/chem.202103567
日期:2021.10.25
Internal alkynes have been used in combination with tosylamides and the Narasaka leaving group to form tetra(hetero)substituted enamines in an aminopalladationcascade reaction. The cascade was terminated either intramolecularly by a Heck reaction or intermolecularly in a Suzuki-type reaction with a boronic acid.
The SmI2âH2Oâamine mixture has been shown to be effective for intramolecular couplings providing diastereoselectivities of up to 100% de in the coupling of O-cyclohexenyliodophenol derivatives into heterocycles.
The samarium Grignard reaction. In situ formation and reactions of primary and secondary alkylsamarium(III) reagents
作者:Dennis P. Curran、Michael J. Totleben
DOI:10.1021/ja00041a024
日期:1992.7
primary and secondary radicals are rapidly reduced in THF/HMPA to form primary- and secondary-alkylsamarium reagents. The primary- and secondary-radicals can be formed either by direct SmIsup 2} reductions of primary- and secondary-halides or by a previous rapid radical cyclization. The samarium reagents have moderate stability in solution, and they react with a variety of typical electrophiles, including
Treatment of allylic ether of 2-iodophenol or 2-haloethanal allylic acetal with phosphinic acid, a base and a radical initiator (AIBN or triethylborane) in aqueous ethanol provided the corresponding radical cyclization product in excellent yield. An addition of a base is critical to employ phosphinic acid as a radical mediator.
Compositions comprising multiple bioactive agents, and methods of using the same
申请人:Berman M. Judd
公开号:US20060142265A1
公开(公告)日:2006-06-29
In part, the present invention is directed to compositions comprising a FabI inhibitor and at least one other bioactive agent. In another part, the present invention is directed to antibacterial compositions comprising a compound of formulas I-III and at least one other antibacterial agent.