A novel synthetic route to phenyl-substituted pyridines synthesis of [1] benzopyrano[4,3-b]pyridines, [1]benzothiopyrano[4,3-b]bpyridines and pyrido[3,2-b][1,4]benzothiazines(1-azaphenothiazines)
作者:D.V. Tyndall、T. Al Nakib、M.J. Meegan
DOI:10.1016/0040-4039(88)85265-1
日期:——
4-diphenyl-2-methoxypyridine-3-carbonitrile. This reaction has been applied to a general synthesis of phenyl-substituted [1]benzopyrano[4,3-pyridines, [1]benzothiopyrano[4,3-]pyridines and pyrido[3,2- [1,4]benzothiazines(1-azaphenothiazines).
Clean, One‐Pot Synthesis of 4<i>H</i>‐Pyran Derivatives Catalyzed by Hexadecyltrimethyl Ammonium Bromide in Aqueous Media
作者:Tong‐Shou Jin、Li‐Bin Liu、Ying Zhao、Tong‐Shuang Li
DOI:10.1081/scc-200064898
日期:2005.7
Abstract An efficient and convenient synthetic route to 4H‐pyran derivatives in water in the presence of hexadecyltrimethyl ammonium bromide (HTMAB) as catalyst is described. This method provides several advantages such as environment friendliness, high yields, and a simple workup procedure. In addition, water was chosen as a green solvent.
Synthesis of 2‐Aminopyran Derivatives and 3‐Arylpropionitrile Derivatives Catalyzed by KF/Al<sub>2</sub>O<sub>3</sub>
作者:Xiang‐shan Wang、Da‐qing Shi、Ya Du、Yan Zhou、Shu‐jiang Tu
DOI:10.1081/scc-120030692
日期:2004.12.31
A series of 2-cyano-3-aryl-3-(3,4-dihydro-1(2H)-naphthalene-one-2-yl) propionitrile derivatives and 2-aminopyran derivatives were synthesized by the KF-Al2O3-catalyzed reaction of malononitrile with 2-arylmethylidene-3,4-dihydro-1(2H)-naphthalenone, 2,6-biarylmethylidene cyclohexanone, or 2,5-biarylmethylidene cyclopenanone in DMF at room temperature. The structure of the later was confirmed by x-ray analysis.
Sofan, Mamdouh A.; El-Taweel, Fathy M.; Elagamey, Abdel Ghani A., Liebigs Annalen der Chemie, 1989, p. 935 - 936
作者:Sofan, Mamdouh A.、El-Taweel, Fathy M.、Elagamey, Abdel Ghani A.、Elnagdi, Mohamed H.