已经开发了一种简单,方便的顺序一锅法合成1,2,3,4-四氢苯并[ b ] [1,6]萘啶。在硼氢化钠存在下,用各种胺对2-氯-3-甲酰基喹啉进行还原性胺化反应可提供高产率的相应仲胺。此外,对仲胺进行了涉及N-烯丙基化和分子内Heck型6-exo-trig环化的顺序一锅反应,得到了所需的1,2,3,4-四氢苯并[ b ] [1,6]对-萘啶衍生物的产率高至高。
已经开发了一种简单,方便的顺序一锅法合成1,2,3,4-四氢苯并[ b ] [1,6]萘啶。在硼氢化钠存在下,用各种胺对2-氯-3-甲酰基喹啉进行还原性胺化反应可提供高产率的相应仲胺。此外,对仲胺进行了涉及N-烯丙基化和分子内Heck型6-exo-trig环化的顺序一锅反应,得到了所需的1,2,3,4-四氢苯并[ b ] [1,6]对-萘啶衍生物的产率高至高。
An efficient synthesis of strained thio-bridged compounds via Pd(0) catalyzed intramolecular Csp2(aryl)-Csp3(alkyl) cross dehydrohalogenative coupling reaction
作者:Mayur I. Morja、Janki J. Patel、Prakashsingh M. Chauhan、Kishor H. Chikhalia
DOI:10.1016/j.tet.2020.131348
日期:2020.8
An operationally simple and efficient strategy employing palladium(0) catalyst to construct a wide range of thiobridged compounds through intramolecular Csp2(aryl)-Csp3(alkyl) cross-dehydrohalogenative coupling reaction has been reported. This methodology proceeds smoothly through six-membered palladacycles and serving as a keystone for the generation of C–C bond to furnish thiobridged derivative in
An efficient carbodiimide-mediated synthesis and DNA-binding studies of novel 2-chloro/mercapto-quinoline-fused 1,3-thiazolidinones via one-pot three-component condensation
作者:Devappa S. Lamani、K. R. Venugopala Reddy、H. S. Bhojya Naik、H. R. Prakash Naik、L. R. Naik
DOI:10.1080/17415990903295678
日期:2010.2
A new and efficient method for the preparation of 2-(2-chloroquinolin-3-yl)-3-(4-methylphenyl)-1, 3-thiazolidin-4-one derivatives has been assembled by DCC:-mediated three-component one-pot reaction of amine, aldehyde, and mercaptoacetic acid. The final compounds were obtained in quantitative yields within 50min. The synthesized compounds were characterized by elemental analysis, FT-IR, 1H-NMR, and mass spectral data. The selected compounds were studied for interaction with calf thymus DNA by electronic spectra, viscosity measurements as well as thermal denaturation studies. On binding to DNA, the absorption spectrum underwent bathochromic and hypochromic shifts. The binding constant (Kb) had a value of 5.3x105M-1 for 2a and 5.8x105M-1 for 3a. The viscosity measurements indicated that the viscosity of sonicated rod-like DNA fragments increased.