Lewis Acid–Doped Natural Phosphate: New Catalysts for the One‐Pot Synthesis of 3,4‐Dihydropyrimdin‐2(1H)‐one

Inexpensive and readily available natural phosphate doped with metal halides is used to efficiently catalyze the three‐component condensation reaction of an aldehyde, a beta‐keto ester, and urea to afford the corresponding dihydropyrimidin‐2(1H)‐ones in high yields.     

Transesterification of Methylbenzoate with Alcohols Catalyzed by Natural Phosphate

Transesterification of methylbenzoate with various alcohols was catalyzed by natural phosphate with or without solvent in heterogeneous media. The molar ratio of alcohol/ester, solvent effect, and weight of catalyst effect have been studied. We have found that the nature of alcohol and the reaction temperature play an important role in the transesterification process. The catalyst can be regenerated and reused without lost of activity.     

Quality management in research: management process of the laboratories of Moroccan faculties of sciences and techniques

Accreditation and Quality Assurance - The implementation of a quality management system including management tools in the industrial sector has several advantages. In this perspective, can we use...