ULTRASONIC SYNTHESIS, MOLECULAR STRUCTURE AND MECHANISTIC STUDY OF 1,3-DIPOLAR CYCLOADDITION REACTION OF 1-ALKYNYLPYRIDINIUM-3-OLATE AND ACETYLENE DERIVATIVES

Regioselectively, ethyl propiolate reacted with 1-(propergyl)-pyridinium-3-olate to give two regioisomers; ethyl 4-oxo-8-(prop-2-ynyl)-8-aza-bicyclo(3.2.1)octa-2,6-diene-6-carboxylate 4, ethyl 2-oxo-8-(prop-2-ynyl)-8-aza-bicyclo(3.2.1)octa-3,6-diene-6-carboxylate 5 as well as ethyl 2,6-dihydro-6-(prop-2-ynyl)furo(2,3-c)pyridine-3-carboxylate 6.The

Abstract Background PIN-FORMED genes (PINs) are crucial in plant development as they determine the directionality of auxin flow.They are present in almost all land plants and even in green algae.However, their role DETANGLER in fern development has not yet been determined.This study aims to investigate the function of CrPINMa in the quasi-model wat

The healthcare sector across most global south countries is challenged by various issues and this includes poor service delivery.The delivery of quality service within healthcare institutions is complicated by unprecedented emigration of healthcare workers to the global north.The other challenges include, poor funding and infrastructure, limited me