(E)-2-(1,1-Dicyclohexyl-3-phenylallyl)-5,5-dimethyl-1,3,2-dioxaborinane

The crystal structure of the title compound, C26H39BO2, which contains no strong hydrogen bond donors, displays only long C-H...O contacts between inversion-related pairs of molecules. The structure contains layers rich in oxygen and boron parallel to the ac plane.

(E)-3-(4-Bromo-5-methylthiophen-2-yl)acrylonitrile

In the title structure, C8H6BrNS, the molecules are planar with the exception of the methyl H atoms. In the crystal, molecules are linked by intermolecular C—H(...)N interactions to form ribbons parallel to the b axis.

Greener chemical processes by regioselective aromatic substitution reactions of simple aromatics

Our research has been oriented towards the development of greener processes for the synthesis of commercially important products, especially in the area of selective electrophilic aromatic substitution reactions, which are of major industrial importance but are traditionally often very unselective reactions. For example, we have shown that reusable zeolite catalysts can have advantages in para-regioselective nitration, halogenation, acylation and alkylation reactions of simple aromatics and heteroaromatics.

Proposed eLarning Model Based on Bloom Taxonomy: Cognitive Theory with Web 2.0 Support the Learning in Higher Education

 This paper seeks to explore the improvements made by learners to their critical thinking when they use web 2.0’s blog tools. The use of Web 2.0 (or read/write web) has increased over the last ten years, especially in higher education [1]. Some authors believe that web 2.0’s blog tools could be used to cater for different learning styles by, e.g. supporting interactions and communications [2], exchanging experiences and acquiring knowledge [3] [4] [5] and improve critical thinking [6].

الصفحات

اشترك ب KSU Faculty آر.إس.إس