Thermal Cyclization of Ketene Dithioacetals: A Convenient Synthetic Route to Substituted 2(1<i>H</i>)-Quinolinones and 2(1<i>H</i>)-Pyridones
作者:Chwang Siek Pak、Eun Bok Choi
DOI:10.1055/s-1992-26361
日期:——
Acyl(arylcarbamoyl)ketene dithioacetals 2 and acyl(1-alkenylcarbamoyl)ketene dithioacetals 5 obtained from the corresponding ß-oxo amides 1, 4 were thermally cyclized to give various 3-acyl-4-alkylthio-2(1H)-quinolinones 3, and 3-acyl-4-alkylthio-5-aryl-2(1H)-pyridones 6, respectively, depending on the substituent of the amide group.
A novel iron-catalyzed one-pot multi-component tandemreaction of acetoacetamide, urea, and two molecules of aryl aldehydes has been developed. This reaction provides a general, straightforward, practical and useful method for the preparation of potential bioactive (E)-6-arylvinyl-3,4-dihydropyrimidin-2(1H)-ones. They are also versatile precursors leading to diverse drug-like dihydropyrimidin-2(1H)-one
作者:Zhiguo Zhang、Songnan Wang、Chunfang Hu、Nana Ma、Guisheng Zhang、Qingfeng Liu
DOI:10.1016/j.tet.2018.11.023
日期:2018.12
A selective copper(I)-catalyzed benzylic C(sp3)–H geminal difunctionalization reaction of a benzylic-type sp3 carbon was developed. This novel strategy allowed simultaneous introduction of amide and hydroxyl group in a highly selective and efficient way via successive oxidative intramolecular amidation and hydroxylation. This method was also applied to the synthesis of 3-hydroxy-2,3-dihydro-1H-pyrrolo[3
开发了选择性铜(I)催化的苄型sp 3碳的苄基C(sp 3)–H双子双官能化反应。这种新颖的策略允许通过连续的氧化性分子内酰胺化和羟基化以高度选择性和有效的方式同时引入酰胺和羟基。该方法还适用于从容易获得的3-甲基-N-取代的喹喔啉-2-羧酰胺以中度到良好的程度合成3-羟基-2,3-二氢-1 H-吡咯并[3,4- b ]喹喔啉酮。产量。吡咯并[5,4- b]的五元环状半胱氨酸部分]喹喔啉酮可以用作随后转化为其他有用的官能团的中间体。
NUCLEIC ACID BINDING DYES AND USES THEREFOR
申请人:McDougall Mark
公开号:US20100233710A1
公开(公告)日:2010-09-16
The invention provides novel compounds and compositions of Formulas I and II, as well as methods of using them. The compounds can be used, for example, to quantify an amount of double stranded DNA in a sample subjected to nucleic acid amplification, or for real time monitoring of a nucleic acid amplification reaction. The compounds can be provided in a kit, for example, with other reagents and instructions for using the compounds and reagents.
The invention provides novel compounds and compositions of Formulas I and II, as well as methods of using them. The compounds can be used, for example, to quantify an amount of double stranded DNA in a sample subjected to nucleic acid amplification, or for real time monitoring of a nucleic acid amplification reaction. The compounds can be provided in a kit, for example, with other reagents and instructions for using the compounds and reagents.