Electron Affinity Spectroscopy—A New Method for the Identification of Functional Groups in Chemical Compounds Separated by Gas Chromatography1

1960 ◽  
Vol 82 (2) ◽  
pp. 431-433 ◽  
Author(s):  
J. E. Lovelock ◽  
S. R. Lipsky
Keyword(s):  
Functional Groups ◽  
Electron Affinity ◽  
Chemical Compounds ◽  
New Method

Direct amidation of acid fluorides using germanium amides

2021 ◽  
Author(s):  
Ardalan Hayatifar ◽  
Emily Elifritz ◽  
Molly Bloom ◽  
Kaitlyn Pixley ◽  
Chris Fennell ◽  
...  
Keyword(s):  
Functional Groups ◽  
New Method ◽  
New Methods ◽  
Acid Fluorides ◽  
Direct Amidation

Amide functional groups are an essential linkage that are found in peptides, proteins, and pharmaceuticals and new methods are constantly being sought for their formation. Here, a new method is...

scholarly journals Cinnamic Acid Derivatives as α-Glucosidase Inhibitor Agents

2017 ◽  
Vol 17 (1) ◽  
pp. 151 ◽  
Author(s):  
Teni Ernawati ◽  
Maksum Radji ◽  
Muhammad Hanafi ◽  
Abdul Mun’im ◽  
Arry Yanuar
Keyword(s):  
Functional Groups ◽  
Cinnamic Acid ◽  
Phenyl Group ◽  
Chemical Compounds ◽  
Cinnamic Acid Derivative ◽  
Cinnamic Acid Derivatives ◽  
Glucosidase Inhibitor ◽  
Glucosidase Inhibitors ◽  
Derivatives Of ◽  
Additive Reaction

This paper reviews biological activity of some cinnamic acid derivative compounds which are isolated from natural materials and synthesized from the chemical compounds as an agent of α-glucosidase inhibitors for the antidiabetic drug. Aegeline, anhydroaegeline and aeglinoside B are natural products isolated compounds that have potential as an α-glucosidase inhibitor. Meanwhile, α-glucosidase inhibitor class of derivatives of cinnamic acid synthesized compounds are p-methoxy cinnamic acid and p-methoxyethyl cinnamate. Chemically, cinnamic acid has three main functional groups: first is the substitution of the phenyl group, second is the additive reaction into the α-β unsaturated, and third is the chemical reaction with carboxylic acid functional groups. The synthesis and modification of the structure of cinnamic acid are very influential in inhibitory activity against α-glucosidase.

scholarly journals Identifikasi Kandungan Senyawa Kimia Cuka Kayu dari Sekam Padi

2017 ◽  
Vol 19 (1) ◽  
pp. 30 ◽  
Author(s):  
Dian Laila Nugrahaini ◽  
Endang Kusdiyantini ◽  
Udi Tarwotjo ◽  
A. Heru Prianto
Keyword(s):  
Phenolic Compounds ◽  
Functional Groups ◽  
Rice Husk ◽  
Chemical Compound ◽  
Chemical Compounds ◽  
Pyrolysis Process ◽  
Wood Vinegar ◽  
Rotary Evaporator ◽  
Infrared Spectrophotometer

Wood vinegar rice husk contains a chemical compound that can be used as a biopesticides. Wood vinegar contained compounds which estimated potential as repellent, antifeedant, antimicrobials, antioxidants, disinfectants and as preservatives. The content of chemical compounds in the wood vinegar must be identified. Identification were done by calculating the concentration of acid, phenol and an infrared spectrophotometer. Production of wood vinegar made by the pyrolysis process used pirolisator. Most of the wood vinegar obtained is evaporated using a rotary evaporator and partly extracted using the method of separating funnel. Compound of acid and phenol in wood vinegar evaporation were higher than the extraction of wood vinegar. These results were confirmed by an infrared spectrophotometer spectrum showed the functional groups of acid and phenolic compounds. Keywords: wood vinegar rice husk, acid, phenol, pyrolysis, infrared spetrofotometer

A method for introducing organic functional groups on silica surfaces using a functionalized vinylsilane containing polymer

2015 ◽  
Vol 6 (4) ◽  
pp. 555-560 ◽  
Author(s):  
Jung-Woo Park ◽  
Dong-Su Kim ◽  
Min-Seok Kim ◽  
Ji-Hwan Choi ◽  
Chul-Ho Jun
Keyword(s):  
Functional Groups ◽  
Silica Surface ◽  
New Method ◽  
Silica Surfaces ◽  
Organic Functional Groups

A new method for introducing robustly bound organic functional groups on the silica surface using a vinylsilane-containing polymer is developed.

Parallel synthesis of meso-substituted corroles and meso-substituted [22]pentaphyrins(1.1.1.0.0) from diacyl-dipyrromethanes

2003 ◽  
Vol 07 (04) ◽  
pp. 239-248 ◽  
Author(s):  
Daniel T. Gryko ◽  
Mariusz Tasior ◽  
Beata Koszarna
Keyword(s):  
Functional Groups ◽  
Parallel Synthesis ◽  
New Method ◽  
Large Excess ◽  
Tertiary Amides ◽  
Moderate Yield ◽  
Made In

A new method was devised for the synthesis of 1,9-diacyldipyrromethanes - crucial intermediates in the synthesis of meso-substituted corroles and porphyrins with different substituents. The diacylodipyrromethanes formation involves acylation of dipyrromethanes with salts made in situ from POCl 3 and tertiary amides. This modified Vilsmeier approach gives higher yields and no concomitant formation of monoacyldipyrromethanes as compared with the Grignard route. Moreover, compounds possessing groups previously inaccessible ( CN , NO 2 etc.) can be synthesized. During optimization of the transformation of diacyldipyrromethanes into meso-substituted corroles it was found that if macrocyclization reaction mediated by DDQ is performed in the presence of large excess of pyrrole, meso-substituted [22]pentaphyrins(1.1.1.0.0) can be obtained in moderate yield. The currently described procedure constitutes a new method for the synthesis of these valuable porphyrinoids. Corroles possessing interesting, easy to transform, functional groups were obtained in 3-40% yield.

A New Method for Rapid Detection of Formaldehyde in Textiles

2013 ◽  
Vol 821-822 ◽  
pp. 402-406
Author(s):  
Ke Jie Fu ◽  
Qi Bei Bao ◽  
Yun Feng ◽  
Li Sheng Yang ◽  
Chang Sheng Feng ◽  
...  
Keyword(s):  
Influencing Factors ◽  
Rapid Detection ◽  
Condensation Reaction ◽  
Chemical Compounds ◽  
New Method ◽  
Formaldehyde Solution ◽  
Potassium Periodate ◽  
Specimen Extraction ◽  
Formaldehyde Content

a new method for rapid detection of formaldehyde has been developed in this research. Under this method, the formaldehyde solution has condensation reaction with 4-amino-3-hydrazine-5-mercapto-1,2,4-triazole (AHMT) and is oxidized by potassium periodate to produce purple chemical compounds. The method for rapid detection of the formaldehyde content in textiles has been optimized after researching primary influencing factors and considering the specimen extraction effect in GB/T 2912.1-2009.This method is sensitive, accurate and fast, taking only 12.5min, 9.6 times faster than the method provided in GB/T 2912.1-2009.

A new method for the preparation of allylstannanes containing functional groups

1980 ◽  
Vol 197 (1) ◽  
pp. C1-C4 ◽  
Author(s):  
Yoshio Ueno ◽  
Mitsuaki Ohta ◽  
Makoto Okawara
Keyword(s):  
Functional Groups ◽  
New Method
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