Convenient Access to Ester‐Containing Quinolinones Through Sequential Radical Alkoxycarbonylation/Cyclization/Hydrolysis Process

2021 ◽  
Author(s):  
Sa Guo ◽  
Xin Wang ◽  
Dongyang Zhao ◽  
Zhiguo Zhang ◽  
Guisheng Zhang ◽  
...  
Keyword(s):  
Hydrolysis Process ◽  
Convenient Access

Palladium-catalyzed carbonylative transformation of aryl iodides and sulfonyl chlorides: convenient access to thioesters

2020 ◽  
Vol 7 (6) ◽  
pp. 885-889 ◽  
Author(s):  
Xinxin Qi ◽  
Zhi-Peng Bao ◽  
Xiao-Feng Wu
Keyword(s):  
Sulfonyl Chlorides ◽  
Aryl Iodides ◽  
Palladium Catalyzed ◽  
Convenient Access

A palladium-catalyzed carbonylative transformation of aryl iodides and sulfonyl chlorides to thioesters has been studied.

Optimizing THP – The intermediate thermal hydrolysis process

2016 ◽  
Vol 2016 (3) ◽  
pp. 878-886
Author(s):  
Ester Rus ◽  
Aurelien Perrault ◽  
Nick Mills ◽  
Achame Shana ◽  
Obinna Molokwu ◽  
...  
Keyword(s):  
Thermal Hydrolysis ◽  
Hydrolysis Process

scholarly journals PEMBUATAN BIOETANOL DARI KUPASAN KENTANG (Solanum tuberosum L.) DENGAN PROSES FERMENTASI

Jurnal Kimia ◽  
2016 ◽  
Author(s):  
Devi Esteria Hasianna Purba ◽  
Iryanti Eka Suprihatin ◽  
A.A.I.A. Mayun Laksmiwati
Keyword(s):  
Gas Chromatography ◽  
Renewable Energy ◽  
Solanum Tuberosum ◽  
Acid Hydrolysis ◽  
Sulphuric Acid ◽  
Solanum Tuberosum L ◽  
Alternative Source ◽  
Hydrolysis Process ◽  
Potato Peels ◽  
Detoxification Process

Ethanol fermented from potato peels is proposed as one alternative source of renewable energy called bioethanol. In this research bioethanol was produced through four stages namely acid hydrolysis, detoxification, fermentation and distillation. The acid hydrolysis process was carried out using sulphuric acid at 100oC for 60 minutes. The detoxification process was carried out by adding NH4OH into the hydrolyzate prior to fermentation. Distillation was performed up to 100oC and the distillate with the BP of 78-84oC was determined for its ethanol content using gas chromatography. The ethanol produced from 5 grams of dried potato peels through fermentation for 4, 5, 6, and 7 days 3.54%; 4,85%; 5,35%; and 6.15% respectively.

ChemInform Abstract: Convenient Access to Strained Trisubstituted 2-Azetines from Enals and Chloramine-T in Aqueous Media.

ChemInform ◽  
2013 ◽  
Vol 44 (15) ◽  
pp. no-no
Author(s):  
Atul K. Singh ◽  
Ruchi Chawla ◽  
Lal Dhar S. Yadav
Keyword(s):  
Aqueous Media ◽  
Chloramine T ◽  
Convenient Access

scholarly journals Optimization on The Hydrolysis Process of Cellulose from Corn Husk to Glucose with Activated Carbon Catalyst Sulfonated

2021 ◽  
Vol 1858 (1) ◽  
pp. 012088
Author(s):  
Didi Dwi Anggoro ◽  
Luqman Buchori ◽  
Mohamad Djaeni ◽  
Ratnawati ◽  
Diah Susetyo Retnowati ◽  
...  
Keyword(s):  
Activated Carbon ◽  
Carbon Catalyst ◽  
Corn Husk ◽  
Hydrolysis Process

Modular Synthesis of 3-Substituted Isocoumarins via Silver-Catalyzed Aerobic Oxidation/6-Endo Heterocyclization of ortho-Alkynylbenzaldehydes

2021 ◽  
Author(s):  
Hao Wu ◽  
Yi-Chun Wang ◽  
Andrey Shatskiy ◽  
Qiu-Yan Li ◽  
Jian-Quan Liu ◽  
...  
Keyword(s):  
Aerobic Oxidation ◽  
Modular Synthesis ◽  
Convenient Access

A method involving silver-catalyzed aerobic oxidation/6-endo heterocyclization of ortho-alkynylbenzaldehydes to yield 3-substituted isocumarins is described. The developed protocol allows convenient access to a range of synthetically useful 3-substituted isocoumarins and...

Enzymatic textile recycling – best practices and outlook

2021 ◽  
pp. 0734242X2110291
Author(s):  
Benjamin Piribauer ◽  
Andreas Bartl ◽  
Wolfgang Ipsmiller
Keyword(s):  
Enzymatic Hydrolysis ◽  
Complete Removal ◽  
The European Union ◽  
Textile Processing ◽  
Current State ◽  
Industrial Implementation ◽  
Hydrolysis Process ◽  
Textile Recycling ◽  
Textile Sector ◽  
Suitable Process

Recently, textiles and their end-of-life management have become the focus of public and political attention. In the European Union the revised waste framework directive defines textiles as municipal waste and stipulates their separate collection by 2025. In the context of these developments, this paper summarises briefly the current state-of-the-art in textile recycling. It is evident that recycling methods are not yet fully developed. This is especially the case with multi-material textiles, which are composed of two or more polymers that are incompatible for recycling. In the practical part of the communication, results are presented which show that enzymatic hydrolysis is a suitable process for recycling textiles made of cotton and polyester. After a complete removal of cotton, the remaining pure polyester fibres undergo a re-granulation and post-condensation step. The so obtained recycled polyester is fed back into the textile processing chain and finally towels are obtained. The main steering parameters of the enzymatic hydrolysis process are described. The study proves that solutions in accordance with the Circular Economy in the textile sector are available but an industrial implementation has not yet been realised.

scholarly journals A Characteristic Study of Polylactic Acid/Organic Modified Montmorillonite (PLA/OMMT) Nanocomposite Materials after Hydrolyzing

Crystals ◽  
2021 ◽  
Vol 11 (4) ◽  
pp. 376
Author(s):  
Su-Mei Huang ◽  
Jiunn-Jer Hwang ◽  
Hsin-Jiant Liu ◽  
An-Miao Zheng
Keyword(s):  
Thermal Stability ◽  
Polylactic Acid ◽  
Decomposition Temperature ◽  
Material Strength ◽  
Scanning Calorimetry ◽  
Hydrolysis Process ◽  
Twin Screw ◽  
Thermal Pressing ◽  
Organophilic Clay ◽  
Mmt Clay

In this study, the montmorillonite (MMT) clay was modified with NH4Cl, and then the structures were exfoliated or intercalated in a polylactic acid (PLA) matrix by a torque rheometer in the ratio of 0.5, 3.0, 5.0 and 8.0 wt%. X-ray diffraction (XRD) revealed that the organic modified-MMT(OMMT) was distributed successfully in the PLA matrix. After thermal pressing, the thermal stability of the mixed composites was measured by a TGA. The mixed composites were also blended with OMMT by a co-rotating twin screw extruder palletizing system, and then injected for the ASTM-D638 standard specimen by an injection machine for measuring the material strength by MTS. The experimental results showed that the mixture of organophilic clay and PLA would enhance the thermal stability. In the PLA mixed with 3 wt% OMMT nanocomposite, the TGA maximum decomposition temperature (Tmax) rose from 336.84 °C to 339.08 °C. In the PLA mixed with 5 wt% OMMT nanocomposite, the loss of temperature rose from 325.14 °C to 326.48 °C. In addition, the elongation rate increased from 4.46% to 10.19% with the maximum loading of 58 MPa. After the vibrating hydrolysis process, the PLA/OMMT nanocomposite was degraded through the measurement of differential scanning calorimetry (DSC) and its Tg, Tc, and Tm1 declined.

Metal-Free Cascade Methylation/Cyclization of N-Alkyl-N-methacryloylbenzamides with Dicumyl Peroxide

Synlett ◽  
2017 ◽  
Vol 29 (05) ◽  
pp. 617-620 ◽  
Author(s):  
Yan-Ning Niu ◽  
Xiao-Feng Xia ◽  
Yuan Yuan
Keyword(s):  
Free Radical ◽  
Dicumyl Peroxide ◽  
Metal Free ◽  
Wide Range ◽  
Radical Cascade ◽  
Convenient Access

A metal-free radical cascade methylation/cyclization of a wide range of N-alkyl-N-methacryloylbenzamides by using dicumyl peroxide as the methylating reagent provides a convenient access to a series of methylated isoquinoline-1,3-diones in moderate yields.

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