A comparative study on the synthesis of 3‘-aryl-3-methyl/2, 3-dimethylspiro[6,7,8,9-tetrahydro-5H-benzo[a]cyclohepten-5, 2‘-(tetrahydro[1,3] thiazolane)]-4‘-ones using microwave irradiation and conventional methods

Pyrazoline class of compounds serve as better moieties for an array of treatments, they have antibacterial, antifungal, antiinflammatory, antipyretic, diuretic, cardiovascular activities. Apart from these they also have anticancer activities. So, pertaining to its importance, many attempts are made to synthesize pyrazolines. Since conventional methods of organic synthesis are energy and time consuming. There are elaborate pathways for green and eco-friendly synthesis of pyrazoline derivatives including microwave irradiation, ultrasonic irradiation, grinding and use of ionic liquids which assures the synthesis of the same within much lesser time and by use of minimal energy

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Eficacia del Diseño Universal de Aprendizaje para el fortalecimiento del pensamiento espacial y sistemas geométricos en estudiantes de primer grado / Effectiveness of the Universal Learning Design for the Strengthening of Space Thought and Geometric Systems in First Grade Students

Revista Internacional de Aprendizaje en Ciencia, Matemáticas y Tecnología ◽

10.37467/gka-revedumat.v6.1879 ◽

2019 ◽

Vol 6 (1) ◽

pp. 21-27

Author(s):

Diana Carmenza Sánchez Botero ◽

Nancy Milena Valencia Yepes

Keyword(s):

Comparative Study ◽

Preliminary Analysis ◽

Master's Degree ◽

First Grade ◽

Spatial Thinking ◽

Learning Design ◽

Geometric Systems ◽

Master’S Degree ◽

Conventional Methods

ABSTRACTThis document approach the research phase of the Master's degree in mathematics didactics at the Caldas University, called comparative study between universal learning design and conventional methods as a strategy for strengthening spatial thinking and geometric systems in the children of the first grade of the Institución Educación Nuestra Señora del Rosario in Manzanares, (Caldas). The objective of this preliminary analysis is to evaluate the effectiveness of learning through the DUA and compare it with the traditional method.RESUMENEste documento abordó la fase de indagación del trabajo de grado de la Maestría en didáctica de la matemática de la Universidad de Caldas, denominado estudio comparativo entre el diseño universal de aprendizaje y los métodos convencionales como estrategia para el fortalecimiento del pensamiento espacial y los sistemas geométricos en los niños del grado primero de la Institución educativa Nuestra Señora del Rosario del municipio de Manzanares, (Caldas). El objetivo de este análisis preliminar consistió en evaluar la eficacia del aprendizaje por medio del DUA y compararlo con el método tradicional.

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The effect of microwave irradiation and conventional acid activation on the textural properties of smectite: Comparative study

Applied Clay Science ◽

10.1016/j.clay.2012.01.020 ◽

2012 ◽

Vol 59-60 ◽

pp. 76-83 ◽

Cited By ~ 26

Author(s):

S. Korichi ◽

A. Elias ◽

A. Mefti ◽

A. Bensmaili

Keyword(s):

Microwave Irradiation ◽

Comparative Study ◽

Textural Properties ◽

Acid Activation

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A microwave-catalyzed rapid, efficient and ecofriendly synthesis of substituted pyrazol-5-ones (Short communication)

Journal of the Serbian Chemical Society ◽

10.2298/jsc0310723d ◽

2003 ◽

Vol 68 (10) ◽

pp. 723-727 ◽

Cited By ~ 7

Author(s):

Vijay Dabholkar ◽

Rahul Gavande

Keyword(s):

Acetic Acid ◽

Carboxylic Acid ◽

Microwave Irradiation ◽

Reaction Rate ◽

Short Communication ◽

Acid Hydrazide ◽

Acetoacetic Ester ◽

Carboxylic Acid Hydrazide ◽

Conventional Methods

A series of 1-(3,4-dihydro-3-oxo-2H-1,4-benzoxazine-2-carbonyl)-3-methyl-4-(substituted phenylhydrazono)-2-pyrazolin-5-ones have been synthesized by the reaction of 2H-3,4-dihydro-3-oxo-1,4-benzoxazine-2-carboxylic acid hydrazide with substituted acetoacetic ester derivatives using acetic acid as solvent under microwave irradiation (MWI), as well as by conventional methods. The reaction rate is enhanced tremendously and the yields are improved under MWI as compared to conventional methods.

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