Sher M.,AllamaIqbal Open University |
Ali P.,AllamaIqbal Open University |
Ashraf Z.,AllamaIqbal Open University |
Aamir M.,AllamaIqbal Open University |
And 5 more authors.
Asian Journal of Chemistry | Year: 2014
The synthesis of some novel 4-aryloxy substituted pyrazoles was performed in two steps. The synthetic route involves the synthesis of 3-aryloxy substituted 1,3-dicarbonyl compounds (3a-e) in first step by the condensation of 3-chloro-pentan-2,4-dione (1) and substituted phenols (2a-e). The hydrazine monohydrate/substituted aromatic hydrazides (4a-e) in the second step were then treated with compounds 3a-e to afford the target pyrazoles (5a-e). The interesting feature of this reaction is the isolation of the intermediate pyrazoline. The structure of this intermediate was also confirmed by the X-ray single crystal. The structures of the synthesized compounds 5a-e were assigned on the basis of FT-IR, 1H NMR, 13C NMR and mass spectroscopic data. © 2014, Chemical Publishing Co. All rights reserved.
Hussain S.,AllamaIqbal Open University |
Jabbar M.,The University of Lahore |
Hussain Z.,Quaid-i-Azam University |
Rehman Z.,Riphah International University |
Saghir A.,Sudan University of Science and Technology
Research Journal of Applied Sciences, Engineering and Technology | Year: 2014
This study comprises students' satisfaction in the higher education-a comparative study between Punjab and Azad Jammu and Kashmir, Pakistan. The comparison is made eight aspects of facilities provided by universities and concepts were used to examine differences in the satisfaction level of students about these facilities and the main factor affecting that perception, between students in the Punjab and the AJ&K universities. Seven out of fourteen general universities were used, in which five out of ten from Punjab and two out of four from AJ&K were asked about their satisfaction with respect to various facilities. It is found that universities of Punjab region excel from the universities of AJ&K region in all aspects of study. © Maxwell Scientific Organization, 2014.