A novel single step synthesis of dinitrosylmolybdenum derivatives directly from molybdate(VI) in aerobic and aqueous media

1979 ◽  
Vol 35 ◽  
pp. L357-L358 ◽  
Author(s):  
Sabyasachi Sarkar ◽  
Periyasamy Subramanian
Keyword(s):  
Aqueous Media ◽  
Single Step

scholarly journals Biosensing Membrane Base on Ferulic Acid and Glucose Oxidase for an Amperometric Glucose Biosensor

Molecules ◽  
2021 ◽  
Vol 26 (12) ◽  
pp. 3757
Author(s):  
Gabriela Valdés-Ramírez ◽  
Laura Galicia
Keyword(s):  
Ferulic Acid ◽  
Glucose Oxidase ◽  
Aqueous Media ◽  
Glucose Biosensor ◽  
Single Step ◽  
Coefficient Of Determination ◽  
The Novel ◽  
Carbon Paste ◽  
Glucose Response ◽  
Glucose Biosensors

A biosensing membrane base on ferulic acid and glucose oxidase is synthesized onto a carbon paste electrode by electropolymerization via cyclic voltammetry in aqueous media at neutral pH at a single step. The developed biosensors exhibit a linear response from 0.082 to 34 mM glucose concentration, with a coefficient of determination R2 equal to 0.997. The biosensors display a sensitivity of 1.1 μAmM−1 cm−2, a detection limit of 0.025 mM, and 0.082 mM as glucose quantification limit. The studies reveal stable, repeatable, and reproducible biosensors response. The results indicate that the novel poly-ferulic acid membrane synthesized by electropolymerization is a promising method for glucose oxidase immobilization towards the development of glucose biosensors. The developed glucose biosensors exhibit a broader linear glucose response than other polymer-based glucose biosensors.

Strong Acid-promoted Skeletal Remodeling of the Aphid Pigment: Red Uroleuconaphin to Green Viridaphin

2022 ◽  
Author(s):  
Chiharu Ozakai ◽  
Kei Kitamura ◽  
Mitsuyo Horikawa ◽  
To-sho Hoshiyama ◽  
Akari Imamura ◽  
...  
Keyword(s):  
Aqueous Media ◽  
Strong Acid ◽  
Single Step

We present herein a strong acid-promoted single-step transformation of red uroleuconaphin A1 into green viridaphin A2. Viridaphin A1 and bis-naphthoquinone were also obtained by performing the reaction in aqueous media....

Zinc(II)-Catalyzed Synthesis of Secondary Amides from Ketones via Beckmann Rearrangement Using Hydroxylamine-O-sulfonic Acid in Aqueous Media

Synthesis ◽  
2020 ◽  
Vol 52 (21) ◽  
pp. 3272-3276
Author(s):  
Jawahar L. Jat ◽  
Saumya Verma ◽  
Puneet Kumar ◽  
Anil K. Khatana ◽  
Dinesh Chandra ◽  
...  
Keyword(s):  
Nitrogen Source ◽  
Sulfonic Acid ◽  
Direct Method ◽  
Aqueous Media ◽  
Single Step ◽  
Beckmann Rearrangement ◽  
Pure Form ◽  
Environmentally Benign ◽  
Open Atmosphere ◽  
Secondary Amides

A zinc(II)-catalyzed single-step protocol for the Beckmann rearrangement using hydroxylamine-O-sulfonic acid (HOSA) as the nitrogen source in water was developed. This direct method efficiently produces secondary amides under open atmosphere in a pure form after basic aqueous workup. It is environmentally benign and operationally simple.

Pd(ii) pincer type complex catalyzed tandem C–H and N–H activation of acetanilide in aqueous media: a concise access to functionalized carbazoles in a single step

2016 ◽  
Vol 18 (11) ◽  
pp. 3295-3301 ◽  
Author(s):  
Vignesh Arumugam ◽  
Werner Kaminsky ◽  
Dharmaraj Nallasamy
Keyword(s):  
Aqueous Media ◽  
Single Step ◽  
One Pot ◽  
One Pot Synthesis ◽  
Type Complex

NNO Pincer type Pd(ii) complex catalyzed one-pot synthesis of N-acetylcarbazoles in aqueous media is presented.

Effect of pH on the single-step synthesis of gold nanoparticles using PEO–PPO–PEO triblock copolymers in aqueous media

2011 ◽  
Vol 363 (2) ◽  
pp. 481-489 ◽  
Author(s):  
Qinghui Shou ◽  
Chen Guo ◽  
Liangrong Yang ◽  
Lianwei Jia ◽  
Chunzhao Liu ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
Triblock Copolymers ◽  
Aqueous Media ◽  
Single Step ◽  
Effect Of Ph

scholarly journals Determination of some short chain carboxylic acids in food by headspace gas chromatography

Chemija ◽  
2018 ◽  
Vol 29 (3) ◽  
Author(s):  
Birutė Bugelytė ◽  
Rima Jonkutė ◽  
Vida Vičkačkaitė
Keyword(s):  
Chromatographic Analysis ◽  
Aqueous Media ◽  
Single Step ◽  
Bakery Products ◽  
Headspace Gas Chromatography ◽  
Tomato Paste ◽  
Suggested Technique ◽  
Headspace Extraction ◽  
Headspace Gas

Headspace gas chromatographic analysis is suggested for the determination of acetic and propionic acids in aqueous media. Derivatization of the acids was accomplished by tributyl borate. The derivatization and headspace extraction were coupled into a single step. Analytical characteristics of the suggested technique at the optimized derivatization/headspace extraction conditions were determined. The technique was applied for the analysis of bakery products, ketchup, tomato paste and kefir.

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