Synthesis of T-shaped Oxazolonaphthoimidazo[1,2-a]pyridines using Lactic Acid as Bio-based Green Solvent: An Insight into Photophysical Studies

2016 ◽  
Vol 1 (11) ◽  
pp. 2900-2908 ◽  
Author(s):  
Umamahesh Balijapalli ◽  
Manojkumar Dhanthalu Thiyagarajan ◽  
Saravanakumar Manickam ◽  
Kulathu Iyer Sathiyanarayanan
Keyword(s):  
Lactic Acid ◽  
Green Solvent ◽  
Photophysical Studies ◽  
Insight Into

ChemInform Abstract: Synthesis of T-Shaped Oxazolonaphthoimidazo[1,2-a]pyridines Using Lactic Acid as Bio-Based Green Solvent: An Insight into Photophysical Studies.

ChemInform ◽  
2016 ◽  
Vol 47 (48) ◽  
Author(s):  
Umamahesh Balijapalli ◽  
Manojkumar Dhanthalu Thiyagarajan ◽  
Saravanakumar Manickam ◽  
Kulathu Iyer Sathiyanarayanan
Keyword(s):  
Lactic Acid ◽  
Green Solvent ◽  
Photophysical Studies ◽  
Insight Into

Aggregation of lactic acid in cold rare-gas matrices and the link to solution: a matrix isolation-vibrational circular dichroism study

2019 ◽  
Vol 21 (7) ◽  
pp. 3574-3584 ◽  
Author(s):  
Angelo Shehan Perera ◽  
Joseph Cheramy ◽  
Mohammad Reza Poopari ◽  
Yunjie Xu
Keyword(s):  
Lactic Acid ◽  
Circular Dichroism ◽  
Matrix Isolation ◽  
Vibrational Circular Dichroism ◽  
Rare Gas ◽  
Spectral Features ◽  
Circular Dichroïsm ◽  
Self Aggregation ◽  
Insight Into

Crucial insight into lactic acid self-aggregation in solution is obtained by following its unique VCD spectral features in cold matrices.

Recent Advances in Three-Component Cyclocondensation of Dimedone with Aldehydes and Malononitrile for Construction of Tetrahydrobenzo[b]pyrans Using Organocatalysts

2018 ◽  
Vol 15 (8) ◽  
pp. 1043-1072 ◽  
Author(s):  
Hamzeh Kiyani
Keyword(s):  
Heterocyclic Compounds ◽  
Review Article ◽  
Drug Candidate ◽  
Green Solvents ◽  
Green Solvent ◽  
Naturally Occurring ◽  
The Many ◽  
Ethanol System ◽  
Insight Into ◽  
New Strategies

Background: The majority of naturally occurring compounds, pharmaceuticals, and drug-candidate molecules possess heterocyclic scaffolds. In this context, tetrahydobenzo[b]pyrans are of considerable importance. In the line with the synthesis of these valuable heterocyclic compounds, the researchers tried to synthesize these molecules using different organocatalysts. The development of new strategies for three-component condensation of dimedone, various aldehydes and malononitrile for construction of tetrahydrobenzo[b]pyrans is of particular interest to organic chemists and pharmacologists. Objective: In this review, three-component catalyzed synthesis of tetrahydrobenzo[b]pyran compounds is introduced, focusing on the developments in the use of organocatalysts. Organocatalytic approaches were investigated for the synthesis of tetrahydrobenzo[b]pyrans. This contribution covers the literature concerning the synthesis of heterocycles referred to, in recent times. Conclusion: This review article is associated with the study of the three-component synthesis of tetrahydrobenzo[b]pyrans using organocatalysts. This review also provides an insight into the importance of these heterocycles. In the vast majority of these reactions, water and water-ethanol system have been used as green solvent media for implementation of them. The use of green solvents, the development of less toxic and promising reagents/catalysts as well as the design of inexpensive and reliable approaches are some of the principles of green chemistry, and most of the methods are benefited from them. Tetrahydrobenzo[b]pyrans and organocatalysts open avenue ofnew horizons. The recyclability of the many of these organocatalysts offers an additional merit for the use of these catalysts in 3-CR of aldehydes, dimedone, and malononitrile reactions.

scholarly journals Lactic acid as an invaluable green solvent for ultrasound-assisted scalable synthesis of pyrrole derivatives

2015 ◽  
Vol 26 ◽  
pp. 81-86 ◽  
Author(s):  
Shi-Fan Wang ◽  
Chao-Lun Guo ◽  
Ke-ke Cui ◽  
Yan-Ting Zhu ◽  
Jun-Xiong Ding ◽  
...  
Keyword(s):  
Lactic Acid ◽  
Green Solvent ◽  
Pyrrole Derivatives ◽  
Ultrasound Assisted ◽  
Scalable Synthesis

Insight into the annealing peak and microstructural changes of poly(l-lactic acid) by annealing at elevated temperatures

Polymer ◽  
2013 ◽  
Vol 54 (13) ◽  
pp. 3377-3384 ◽  
Author(s):  
Zhiyong Wei ◽  
Ping Song ◽  
Cheng Zhou ◽  
Guangyi Chen ◽  
Ying Chang ◽  
...  
Keyword(s):  
Lactic Acid ◽  
Elevated Temperatures ◽  
Microstructural Changes ◽  
Insight Into

scholarly journals Ekstraksi Polifenol Total dari Umbi Bawang Dayak (Eleutherine bulbosa [Mill.] Urb.) menggunakan Metode Lactic Acid-Sucrose based Microwave Assisted Extraction

2019 ◽  
Vol 10 ◽  
pp. 118-121
Author(s):  
Kurnya Kurnya ◽  
Hajrah Hajrah ◽  
Islamudin Ahmad
Keyword(s):  
Breast Cancer ◽  
Diabetes Mellitus ◽  
Lactic Acid ◽  
Microwave Assisted Extraction ◽  
Green Solvent ◽  
Total Polyphenols ◽  
Total Polyphenol ◽  
Polyphenol Compounds ◽  
Microwave Assisted ◽  
Assisted Extraction

Dayak Onion (Eleutherine bulbosa [Mill.] Urb.) It is a plant that grows in Indonesia precisely in the Kalimantan area and has traditionally efficacious in curing various diseases such as diabetes mellitus, hypertension, breast cancer, cholesterol-lowering, and stroke. This study aims to determine the effect of using the lactic acid-sucrose based microwave-assisted extraction (MAE) method to extract total polyphenols from Dayak onion tubers (Eleutherine bulbosa [Mill.] Urb.). Dry samples were extracted using a lactic-sucrose acid (green solvent) solvent in the ratio of 1: 1, 2: 1, and 3: 1  g/g with 50% microwave strength for 10 minutes with a ratio of samples and solvents of 1:10 g /mL. Extracts that have been obtained then determined the total polyphenol levels using a UV-VIS spectrophotometer at a wavelength of 791 nm. Based on the results of the study, it was obtained the levels of polyphenols from each condition of the solvent used in the sample that is 28.73 mg GAE/g sample ( 1: 1 g/g solvent); 20.2 mg GAE/g sample ( 2:1 g/g solvent); 36.35 mg GAE/g sample ( 3:1 g/g solvent). From this study, it can be concluded that the MAE method can be used to extract polyphenol compounds from Dayak bulbs.

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