NaIO4-mediated sequential iodination/amidation reaction of N-alkyl quinolinium iodide salts has been first developed. This cascade process provides an efficient way to rapidly synthesize 3-iodo-N-alkyl quinolinones with high regioselectivity and good functional group tolerance. This protocol was also amenable to the isoquinolinium salts, thus providing a complementary method for preparing the 4-iodo-N-alkyl
An Ir(III)-catalyzed C(3)–H alkylation of N-acetyl-1,2-dihydroisoquinolines with diverse acceptor–acceptor diazo compounds has been achieved under a single catalytic system via metal carbene migratory insertion. Moreover, further synthetic transformations of the alkylated products such as aromatization, selective decarboxylation, and decarbonylation lead to the formation of several synthetically viable
Synthesis of 4-Iodoisoquinolin-1(2<i>H</i>)-ones by a Dirhodium(II)-Catalyzed 1,4-Bisfunctionalization of Isoquinolinium Iodide Salts
作者:Zaixiang Fang、Yi Wang、Yuanhua Wang
DOI:10.1021/acs.orglett.8b03614
日期:2019.1.18
An efficient Rh2(II,II)-catalyzed reaction has been developed under mild conditions. This synthetic method proceeds through iodination/oxidation of readily available isoquinolinium iodide salts under aerobic conditions with good to excellent yields. 4-Iodoisoquinolin-1(2H)-ones are important building blocks for biologically and medicinally important compounds. The developed methodology was applied
Electrochemical regioselective selenylation/oxidation of <i>N</i>-alkylisoquinolinium salts <i>via</i> double C(sp<sup>2</sup>)–H bond functionalization
作者:Xiang Liu、Yajun Wang、Dan Song、Yuhan Wang、Hua Cao
DOI:10.1039/d0cc06778d
日期:——
An efficient, novel, and environmentally friendly electrochemical regioselective selenylation/oxidation of N-alkylisoquinolinium salts via double C(sp2)–H bond functionalization under undivided electrolytic conditions has been developed. A series of selenide isoquinolones were easily accessed through this sustainable and clean electrochemical system. The present protocol was further extended to afford
已开发了在不分开的电解条件下通过双C(sp 2)-H键官能化对N-烷基异喹啉鎓盐进行高效,新颖且环境友好的电化学区域选择性硒化/氧化的方法。通过这种可持续,清洁的电化学系统,很容易获得一系列硒化异喹诺酮。本方案进一步扩展为提供硒化物喹诺酮和1,3-二甲基-1 H-苯并[ d ]咪唑-2(3 H)-1。此外,抗病毒生物测定法表明化合物3j对烟草花叶病毒(TMV)表现出优异的抗病毒活性,其抑制率高达90%。
Pyrrolo-pyridine derivatives
申请人:Merck Sharp & Dohme, Ltd.
公开号:US05700809A1
公开(公告)日:1997-12-23
Compounds of formula I are ligands for dopamine receptor subtypes within the body and are therefore useful in the treatment and/or prevention of disorders of the dopamine system, in particular schizophrenia. ##STR1## wherein Q is ##STR2##