scholarly journals A NEWER METHODDEVELOPED FOR THE SYNTHESIS OF DIFERULOYL METHANE AND ITS DERIVATIVES

2021 ◽  
Vol 9 (02) ◽  
pp. 332-337
Author(s):  
J.M. Pawara ◽  
◽  
S.S. Patil ◽  
D.K. Patil ◽  
V.S. Kamble ◽  
...  
Keyword(s):  
Aromatic Aldehyde ◽  
Research Work ◽  
Environmentally Friendly ◽  
High Yield ◽  
Acetyl Acetone

Here in the current research work we have developed newer method for the synthesis of diferuloyl methane(curcumin)Ca-q. MangnesiumHydroxide were found to be an effective and mild base for synthesis of curcumin and its derivatives obtained by reaction of one equivalent of acetyl acetone with two equivalent of corresponding aromatic aldehyde in microwave(240 W). The existingscheme offers severalaids such as high yield, less time, and environmentally friendly.

scholarly journals LiNbO3Coating on Concrete Surface: A New and Environmentally Friendly Route for Artificial Photosynthesis

2013 ◽  
Vol 2013 ◽  
pp. 1-6 ◽  
Author(s):  
Ranjit K. Nath ◽  
M. F. M. Zain ◽  
Abdul Amir H. Kadhum
Keyword(s):  
Building Materials ◽  
Artificial Photosynthesis ◽  
Reaction Pathway ◽  
Research Work ◽  
Pollution Prevention ◽  
Environmentally Friendly ◽  
Concrete Surface ◽  
Concrete Material ◽  
Gas Phases ◽  
Work Done

The addition of a photocatalyst to ordinary building materials such as concrete creates environmentally friendly materials by which air pollution or pollution of the surface can be diminished. The use of LiNbO3photocatalyst in concrete material would be more beneficial since it can produce artificial photosynthesis in concrete. In these research photoassisted solid-gas phases reduction of carbon dioxide (artificial photosynthesis) was performed using a photocatalyst, LiNbO3, coated on concrete surface under illumination of UV-visible or sunlight and showed that LiNbO3achieved high conversion of CO2into products despite the low levels of band-gap light available. The high reaction efficiency of LiNbO3is explained by its strong remnant polarization (70 µC/cm2), allowing a longer lifetime of photoinduced carriers as well as an alternative reaction pathway. Due to the ease of usage and good photocatalytic efficiency, the research work done showed its potential application in pollution prevention.

scholarly journals Calcium hydroxide: An efficient and mild base for one-pot synthesis of curcumin and it’s analogues

2013 ◽  
Vol 6 (1) ◽  
pp. 150-156
Author(s):  
Pramod S. Kulkarni ◽  
Dasharath D. Kondhare ◽  
Ravi Varala ◽  
Pudukulathan K. Zubaidha
Keyword(s):  
Calcium Hydroxide ◽  
Aromatic Aldehyde ◽  
One Pot ◽  
Acetyl Acetone ◽  
One Pot Synthesis ◽  
The One ◽  
High Yields

Abstract Calcium hydroxide was found to be an efficient mild base for the one-pot synthesis of curcumin and its analogues obtained by condensation of one equivalent of acetyl acetone with two equivalents of corresponding aromatic aldehyde. The present protocol offers various advantages such as high yields, inexpensive easily available mild base, easy workup and eco-friendly method.

Efficient and Green Synthesis of 2,2′-(Arylmethylene)Bis-4-Pyrones in an Ionic Liquid [bmim+][BF4–]

2017 ◽  
Vol 41 (2) ◽  
pp. 75-78
Author(s):  
Yulan Ren ◽  
Hang Song
Keyword(s):  
Ionic Liquid ◽  
Green Synthesis ◽  
Aromatic Aldehyde ◽  
Ammonium Acetate ◽  
High Yield ◽  
Three Component Reaction ◽  
Work Up

A series of sixteen 2,2′-(arylmethylene)bis(3-hydroxy-6-methyl-4H-pyran-4-ones) have been prepared in high yield via an ammonium acetate-catalysed three-component reaction of an aromatic aldehyde (1 equiv.) and allomaltol (2 equiv.) in an ionic liquid [bmim+][BF4–]. The reaction work-up is simple and the ionic liquid can be easily separated from the product and reused.

Physicochemical properties of a urea/zinc chloride eutectic mixture and its improved effect on the fast and high yield synthesis of indeno[2,1-c]quinolines

2020 ◽  
Vol 44 (19) ◽  
pp. 7987-7997
Author(s):  
Diana Peña-Solórzano ◽  
Vladimir V. Kouznetsov ◽  
Cristian Ochoa-Puentes
Keyword(s):  
Physicochemical Properties ◽  
Efficient Method ◽  
Zinc Chloride ◽  
Acidic Medium ◽  
Eutectic Mixture ◽  
Environmentally Friendly ◽  
High Yield

An environmentally friendly and efficient method for the synthesis of indeno[2,1-c]quinolines is developed using a urea/zinc chloride eutectic mixture as a green mildly acidic medium.

Preface

2006 ◽  
Vol 78 (11) ◽  
pp. iv
Author(s):  
M. Kidwai
Keyword(s):  
Green Chemistry ◽  
Research Work ◽  
Environmentally Friendly ◽  
Sustainable Chemistry ◽  
Research Activity ◽  
Safe Product ◽  
Teachers And Students ◽  
The Subject ◽  
Poster Presentations ◽  
Oral Presentations

Green chemistry occupies a research frontier that is the subject of much current research activity. Although it is not a new branch of chemistry, it demands distinctive thought processes about existing and new chemistry tools, as well as knowledge and creative design of those chemical principles that can contribute toward societal growth whilst protecting the environment and human health. To achieve these ends, it is necessary to create more awareness in the lay public, and to ensure that teachers and students at all levels of education become familiar with the basic concepts and their beneficial outcomes. In this respect, developing countries still have much to do in order to achieve higher levels of awareness of and participation in a greener vision.The IUPAC-sponsored Second International Symposium on Green/Sustainable Chemistry, held in Delhi on 10-13 January 2006, contributed successfully to promoting international awareness of green chemistry. Almost 550 delegates attended from 22 countries and participated in deliberations on recent advances in the trend toward more environmentally friendly practice of chemistry. In addition to a program of 8 plenary lectures and three-way parallel sessions for 31 main and 44 invited lectures by eminent scientists, upcoming doctoral candidates and postdoctoral fellows gave 33 oral presentations on their contributions to future developments in green chemistry. The poster presentations showcased up-to-date research on a range of topics including synthesis of bioactive compounds, green edges of physical chemistry including computational methods, and the use of biomaterials, nanotechnology, biomimetic processes, microwave technology, and ionic liquids, amongst others. The subject of methodological industrialization attracted much interest and served as a source of information and inspiration to representatives from no less than 28 chemical and pharmaceutical companies.The Symposium has contributed to the growing recognition that government, industry, and the academic sector need to cooperate closely, in order to achieve and promote the cause of green chemistry and its beneficial consequences throughout the world. The challenge for the chemistry community is to recognize the need and pursue research that engages environmentally friendly challenges and outcomes. Chemistry provides many of the tools that enable us to understand and influence the environment, and has the potential to be a decisive factor in securing an environmentally acceptable future for humankind. At the practical level, each advance through development of a safe process or a safe product contributes to that future. Much has already been achieved, but a great deal more remains to be done. The publication of this collection of papers, based upon a selection of lectures of the Symposium, provides an overview of some of the chemistry through which clean, eco-friendly, and less wasteful manufacturing processes for sustainable development is increasingly being realized.The International Organizing Committee contributed to shaping the program for this important event in the international calendar of green chemistry activities. Thanks are due to the Local Organizing Committee for the efficiency and excellence of the arrangements and for the gracious hospitality extended to all participants. On behalf of the organizers, I am grateful to those who contributed their research work to this issue and for the support from Dr. John W. Jost, IUPAC Executive Director.M. KidwaiSymposium Chairman

scholarly journals A Fast, Highly Efficient, and Green Protocol for Synthesis of Biscoumarins Catalyzed by Silica Sulfuric Acid Nanoparticles as a Reusable Catalyst

2013 ◽  
Vol 2013 ◽  
pp. 1-5 ◽  
Author(s):  
Bahareh Sadeghi ◽  
Tayebe Ziya
Keyword(s):  
Sulfuric Acid ◽  
Aromatic Aldehyde ◽  
High Yield ◽  
Reusable Catalyst ◽  
Silica Sulfuric Acid ◽  
Green Protocol ◽  
Highly Efficient

Silica sulfuric acid nanoparticles have been prepared and shown to efficiently catalyse the reaction between an aromatic aldehyde or phenylglyoxal and a 4-hydroxycoumarin at reflux in EtOH to afford the biscoumarin derivatives in high yield.

scholarly journals Dowex 50W: A Green Mild Reusable Catalyst for the Synthesis of 2-Aryl Benzoxazole Derivatives in Aqueous Medium

2021 ◽  
Vol 37 (2) ◽  
pp. 341-347
Author(s):  
Arup Datta
Keyword(s):  
Aqueous Medium ◽  
Heterogeneous Catalyst ◽  
Environmentally Friendly ◽  
High Yield ◽  
Reusable Catalyst ◽  
One Pot ◽  
Simple Process ◽  
Effective Catalyst ◽  
Rapid Reaction ◽  
Environmentally Friendly Method

In this work simple efficient, one pot and environmentally friendly method was developed for the synthesis of 2-Aryl-1H-benzoxazole derivatives at 80º C using ortho-aminophenol and various aldehydes. It has been found that Dowex50W is an effective catalyst to prepare moderate to high yield of a variety of benzoxazole derivatives through a clean and simple process. Aqueous medium, green methodology, rapid reaction, reusability of heterogeneous catalyst are the great advantages of this protocol.

scholarly journals Studies on Synthesis of Aldimines: Part-I. Synthesis, Characterization and Biological Activity of Aldimines from Benzaldehyde with variedly substituted anilines

2018 ◽  
Author(s):  
C. J. Patil ◽  
Manisha C. Patil ◽  
Mrunmayee C. Patil
Keyword(s):  
Biological Activity ◽  
Aromatic Aldehyde ◽  
Elemental Analysis ◽  
High Purity ◽  
Aromatic Amines ◽  
Condensation Reaction ◽  
Physical Constant ◽  
High Yield ◽  
Substituted Anilines

A conventional condensation reaction of an aromatic aldehyde, Benzaldehyde with seven different aromatic amines viz. Aniline, 2-Choro-aniline, 3-Choro-aniline, 4-Choro-aniline, 2-Nitro-aniline, 3-Nitro-aniline and 4-Nitro-aniline and reacted efficiently to synthesize a series of Aldmines, I to VII, in moderate to high yield and high purity. The reaction was monitored and the products were analyzed by employing the TLC technique. All the products obtained were characterized by their colour, physical constant, TLC, elemental analysis and spectral (UV-Vis and FTIR) method. The synthesized Aldimines were subjected to in vitro biological activity.

scholarly journals еvaluation of meadow clover varieties selection of smolensk goshos in the collection nursery

2021 ◽  
Author(s):  
А.М. Мазин
Keyword(s):  
Research Work ◽  
Weather Conditions ◽  
Dry Mass ◽  
High Yield ◽  
First Year ◽  
State Farm ◽  
Agricultural Technologies ◽  
Early Maturing ◽  
Pskov Region ◽  
Second Year

В статье представлены результаты оценки сортов клевера лугового селекции Смоленской ГОСХОС по урожайности зеленой и сухой массы и хозяйственно-ценным признакам за 2019-2020 годы. Целью наших исследований являлось изучение восьми перспективных сортов клевера лугового для рекомендации их возделывания в условиях Псковской области и возможного использования в селекционной работе. Исследовательская работа с сортами клевера лугового проводилась в коллекционном питомнике на опытном поле лаборатории агротехнологий ОП Псковский НИИСХ, который был заложен в 2019 году. Высокий урожай зеленой массы и сухого вещества, в сумме за два года пользования, показали сорта: Надежный – 19,2 т/га (от стандарта +4,4 т/га), Тайлен – 18,9 т/га (+ 4,1 т/га), Смоленский 29 – 18,1 т/га (+3,3 т/га), Починковец – 16,9 т/га (+2,1 т/га) и Делец – 15,1 т/га (+1,5 т/га). Погодные условия вегетационного сезона в 2019 и 2020 годах были благоприятными для роста и развития клевера лугового. Укосная спелось – фаза начала цветения клевера, у раннеспелых сортов наступила в среднем на 9-17 дней раньше, чем у позднеспелых. Засорённость травостоев в первом укосе второго года пользования составила 5-7% и повышалась во втором укосе по некоторым сортам до 30% видового участия. В первый год жизни растений наибольшая облиственность была у раннеспелых клеверов и составляла от 43 до 48%. Во второй год жизни – год основного использования травостоев клевера, от укоса к укосу облиственность растений клевера повышалась. Самый высокий показатель дружности отрастания был отмечен у сортов Починковец, Смоленский 29, Делец и Стодолищенский. Для возделывания в условиях производства в Псковской области можно рекомендовать сорта Надежный, Тайлен, Смоленский 29, Починковец и Делец. The article presents the results of the evaluation of meadow clover varieties selected by the Smolensk state farm according to the yield of green and dry mass and economically valuable characteristics for 2019-2020. The purpose of our research is to study eight promising varieties of meadow clover to recommend their culti- 25 vation in the conditions of the Pskov region and possible use in breeding work. Research work with varieties of meadow clover was carried out in a collection nursery on the experimental field of the laboratory of agricultural technologies of the Pskov research institute, which was founded in 2019. The high yield of green mass and dry matter, in total for two years of use, was shown by the Reliable varieties – 19.2 t/ha (from the standard +4.4 t/ha), Tailen-18.9 t/ha (+ 4.1 t/ha), Smolensky 29 – 18.1 t/ha (+3.3 t/ha) and Delets – 15.1 t/ha (+1.5 t / ha). The weather conditions of the growing season in 2019 and 2020 were favorable for the growth and development of meadow clover. The mowing season is the phase of the beginning of clover flowering, in early-maturing varieties it occurred on average 9-17 days earlier than in late-maturing varieties. The weed infestation in the first mowing of the second year of use was 5-7% and increased in the second mowing for some varieties up to 30% of the species participation. In the first year of plant life, the highest leafiness was in early-maturing clovers and ranged from 43 to 48%. In the second year of life – the year of the main use of clover herbage, the leafiness of clover plants increased from mowing to mowing. The highest rate of amity of reg rowth was noted in the varieties Pochinkovets, Smolensky 29, Delets and Stodolishchevsky. For cultivation in production conditions in the Pskov region, we can recommend the varieties Reliable, Tailen, Smolensky 29, Delets and Pochinkovets.

scholarly journals A Review of Research Directions and Research Methods of Farmland Weeds

2021 ◽  
Vol 3 (2) ◽  
Author(s):  
Shujuan Li ◽  
Guoqin Huang
Keyword(s):  
Research Methods ◽  
Weed Control ◽  
High Efficiency ◽  
Research Work ◽  
Reference Value ◽  
Seed Banks ◽  
High Yield ◽  
Weed Seed ◽  
Research Directions ◽  
Weed Communities

Farmland weeds are an important part of farmland ecosystems. Research on farmland weeds is one of the major research fields in agricultural ecology. It is of great significance for achieving high yield, high quality and high efficiency in agriculture. In recent years, research on farmland weeds has focused on investigation of weed communities, research on weed seed banks, and research on weed control. These three research directions complement each other. Among them, the investigation work of weed communities and the research of weed seed banks are helpful for us to grasp the occurrence of farmland weeds more accurately and provide references for the control of farmland weeds. This article summarizes the research directions of farmland weeds in recent years (weed community investigation, weed seed bank, weed control) and the research methods used, provide reference value for the follow-up research work of farmland weeds, and provide theoretical support for promoting the development of rural ecological industry and building beautiful villages.

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