نتایج جستجو برای: 7 hydrazinyl 1 phenylpyrimido4
تعداد نتایج: 3062292 فیلتر نتایج به سال:
Microwave-assisted synthesis and antioxidant properties of hydrazinyl thiazolyl coumarin derivatives
New aryl-hydrazinyl-1,3-selenazole and aroyl-hydrazonyl-1,3-selenazoles were synthesized via Hantzsch type condensation reactions of selenosemicarbazides with α-halogenocarbonyl derivatives, under classical versus microwave heating conditions. Excellent yields and shorter reaction times were obtained under irradiation conditions. The structures of the synthesized compounds were assigned based o...
The title hydrate, C(10)H(10)N(4)·H(2)O, shows a small twist in the hydro-zone derivative, the dihedral angle between the pyridine and pyrrole rings being 11.08 (12)°. The pyridine and pyrrole N atoms lie to the same side of the mol-ecule being sustained in place by hydrogen-bonding inter-actions with the water mol-ecule. Further inter-molecular O-H⋯N and N-H⋯O hydrogen bonding leads to the for...
Business-to-Business integration (B2Bi) is considered to be not merely an IT-issue, but also a business problem. This paper draws attention to the challenges companies within an Extended Enterprise are confronted with when integrating their systems. We primarily pay attention to coordination problems that may arise. To overcome these problems we propose the use of Enterprise Architecture descri...
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