Syntheses of Quaternary Carbon-Containing Oxazatricycle and Spiropyran Libraries via Multicomponent Reactions and Their Molecular Switching Properties
作者:Chi-Hui Lin、Jhih-Rong Chen、Ding-Yah Yang
DOI:10.1021/cc900127g
日期:2010.1.11
multicomponent reaction from various N-methylisoquinolium or flavylium salts and 4-hydroxycoumarins or dimedone in acetone. Purification of the final products by recrystallization in ethyl acetate/methylene chloride or by column chromatography allowed easy isolation of nine compounds of each array. Preliminary studies indicated that some of the prepared compounds exhibit redox switching, photochromic
Indium metal as a reducing agent in organic synthesis
作者:Michael R. Pitts、Justin R. Harrison、Christopher J. Moody
DOI:10.1039/b101712h
日期:——
aromatic nitrocompounds under similar conditions results in selectivereduction of the nitro groups; ester, nitrile, amide and halide substituents are unaffected. Likewise indium in aqueous ethanolic ammonium chloride is an effective method for the deprotection of 4-nitrobenzyl ethers and esters. Indium is also an effective reducing agent under non-aqueous conditions and α-oximino carbonyl compounds can
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%。
Vergleichende Untersuchungen über die Struktur des Thiazols und des Isochinolins
作者:H. Erlenmeyer、H. Baumann、E. Sorkin
DOI:10.1002/hlca.19480310715
日期:——
Zur Überprüfung der auf Mills und Bmith zurückgehenden Vorstellung vonder Strukturähnliehkeit des Thiazol- und Isochinolinrings wurde das Verhalten von 4-Methylthiazol und von 3-Methyl-isochinolin gegenüber Benzaldehyd eingehend untersucht. Es wurde gefunden, dass in beiden Fällen Kondensation eintritt, die aber beim Thiazolderivat hauptsächlich zum Phenyl-[4-methylthiazolyl-(2)]-carbinol führt, während