Selective synthesis of octahydroacridines and diannelated pyridines over zinc-containing mesoporous aluminosilicate molecular sieve catalysts
作者:Manickam Selvaraj、Mohammed A. Assiri
DOI:10.1039/c9dt01196j
日期:——
the highly selective synthesis of 1,2,3,4,5,6,7,8-octahydroacridine (OHA) by the vapour phase aminocyclization of cyclohexanone (CyO) with a mixture of formaldehyde (HCHO) and ammonia (NH3) over mesoporous bimetallic ZnAlMCM-41 (ZnAl-41) molecularsieves as efficient catalysts, which were synthesised by a simple basic hydrothermal method. To find optimum parameters for the synthesis of OHA, different
Vapor Phase Synthesis of Annelated Pyridines over Metal Modified Zeolite Beta
作者:Arun Kumar Macharla、Mahender Reddy Marri、Swamy Peraka、Naresh Mameda、Srujana Kodumuri、V. V. Krishna Mohan Kandepi、Narender Nama
DOI:10.1007/s10562-015-1598-0
日期:2015.10
synthesis of annelated pyridines from cyclic ketones, aldehydes and ammonia was carried out over various zeolite molecular sieves like Hβ, HZSM-5 (240), HZSM-5 (40), HY, HX, HMCM-41 and Mordenite. The preliminary screening of catalyst clearly shows that Hβ catalyst was found to be more active for the vapor phase synthesis of annelated pyridines. Hβ was further modified with transition metals like Fe, Cu
Liquid phase process for the synthesis of annulated pyridines over molecular sieve catalysts
申请人:Kulkarni J. Shivanand
公开号:US20060149068A1
公开(公告)日:2006-07-06
The present invention relates to a process for producing annulated pyridines by reacting cyclic ketone, aldehyde and ammonia in presence of molecular sieve type catalysts in an environmentally friendly, economical and highly selective heterogeneous method.
Regio- and stereoselective annelation of phenanthridines with α,β-acetylenic γ-hydroxyacid nitriles
作者:Ludmila V. Andriyankova、Anastasiya G. Mal'kina、Lina P. Nikitina、Kseniya V. Belyaeva、Igor A. Ushakov、Andrei V. Afonin、Mikhail V. Nikitin、Boris A. Trofimov
DOI:10.1016/j.tet.2005.06.012
日期:2005.8
Phenanthridines (3,4-, 7,8-benzoquinolines and methyloctahydrophenanthridine) are annelated regio- and stereoselectively with α,β-acetylenic γ-hydroxyacid nitriles to form new polyfunctional condensed systems, 4-cyanomethylene-1,3-oxazolidino-1,2-dihydrophenanthridines.
This invention provides pyrimidine derivatives represented by a formula,
in the formula, ring A stands for carbocyclic group or heterocyclic group,
X
1
stands for hydrogen, lower alkyl, amino, etc.,
X
2
stands for hydrogen or lower alkyl, Y stands for a direct bond or sulfur or nitrogen, n stands for an integer of 0-4, and
Ar stands for a group of the following formula,
or a salt thereof, which concurrently exhibit 5-HT
1A
agonistic activity and 5-HT
3
antagonistic activity and are useful for therapy and treatments of diseases such as IBS.
The invention furthermore provides a therapeutic method of IBS, characterized by having 5-HT
1A
agonistic activity and 5-HT
3
antagonistic activity work simultaneously and cooperatively in vivo, which comprises either administering 5-HT
3
antagonistic agent which concurrently exhibits 5-HT
1A
agonistic activity, or administering 5-HT
1A
agonistic agent and 5-HT
3
antagonistic agent simultaneously, in sequence or at an interval.