4-Chloro-N-methyl-2-(1,2,3,4-tetra­hydro­isoquinolin-1-yl)aniline

The racemic title compound, C16H17ClN2, shows a tetra­hydro­isoquinoline skeleton with a 4-chloro-N-methyl­aniline group linked to the C atom at position 1. The dihedral angle between the benzene rings is 85.82 (4)°. An intra­molecular N—H⋯N hydrogen bond occurs. In the crystal, mol­ecules are linked through inter­molecular C—H⋯π inter­actions

Natural phosphate as new, highly efficient and reusable heterogeneous catalyst for the selective preparation of beta-enaminoesters under solvent-free conditions

Natural phosphate (NP) has been found to be a new and highly efficient heterogeneous catalyst for the synthesis of beta-enaminoesters, by simple condensation of various primary amines with beta-dicarbonyl under solvent-free conditions. Keywords: Natural phosphate (NP), b-enaminoesters, solvent-free condition

Development of a Sustainable and Solventless Friedel-Crafts Acylation Reaction of an Aromatic Natural Product “Ar-Himachalene” over Nanostructured ZnO as a New Catalyst

We describe the development of a sustainable and solventless acylation reaction of the naturally occurring product, namely 2,5,9,9-tetramethyl-6,7,8,9-tetrahydro-5H-benzocycloheptene [ar-himachalene], with acid chlorides over a new type of flower-shaped ZnO nanosructure as a hetrogenous catalyst at room temperature. The ZnO nanoflowers can efficiently and selectively catalyze the acylation of the aromatic group of ar-himachalene and be reused up to three times by simple filtration and washing without significant loss in their catalytic activity. Keywords: Acylation, Natural product, Solventless, Zin Oxide nanostructure, Heterogenous Catalysis, Sustainability

New Analytical Model of human body arm movements under various solicitations by the finite Element Analysis

The movement of a human arm body is complex since it is composed of an assembly of elements in three-dimensional movement, thus, modeling this arm is required to write its various movements using systems of simple and convergent equations. Therefore, the finite element method is an essential method to write and analyze the different kinematic and dynamic movements of the arm. The position of stress, strains, velocity, and acceleration in the different limbs of the arm have been determined and analyzed. The applications of this topic may have a great importance in the field of biomechanics, especially when the material considered is of the isotropic or orthotropic type. Good comparisons were observed for both types of materials investigated in our research