Results 41 to 50 of about 229 (107)

The reactivity of a,b-unsaturated carboxylic acids. Part XVI. The kinetics of the reaction of cycloalkenylcarboxylic and cycloalkenylacetic acids with diazodiphenylmethane in various alcohols [PDF]

open access: yesJournal of the Serbian Chemical Society, 2002
The rate constants for the reaction of diazodiphenylmethane with 1-cyclopentenecarboxylic, 1-cycloheptenecarboxylic, cyclopent-1-enylacetic and cyclohept-1-enylacetic acids were determined in eight alcohols at 30°C using the appropriate UV-spectroscopic ...
VERA V. KRSTIC   +2 more
doaj  

Reactivity of beta-aroylacrylic acids with diazodiphenylmethane

open access: yes, 1998
The rate constants for 10 trans-substituted beta-aroylacrylic acids in their reaction with diazodiphenylmethane (DDM) were determined in ethanol at 30 degrees C. The intention was to study the transmission of electronic effects of substituents on the phenyl nuclei to the carboxylic group reaction center, through the -C(=O)-CH=CH-group.
Stevović, Ljubomir S.   +4 more
openaire   +1 more source

Synthesis of unsymmetrical pendant-armed and phosphonic acid-pendant-armed cross-bridged tetraazamacrocycles [PDF]

open access: yes, 2008
The synthesis of a variety of cross-bridged tetraazamacrocycles bearing phosphonate pendant arms and their corresponding phosphonic acid derivatives as well as their Cu(II) complexes are presented.
Stigers, Dannon Jason
core   +1 more source

Thioetherification and Etherification Utilizing Trichloroacetimidates Under Thermal Conditions & Progress Towards an Efficient Synthesis of AQX-1125 [PDF]

open access: yes, 2016
The synthesis of ethers and thioethers is necessary as the motifs are ubiquitous in natural products, pharmaceuticals, and are quite useful in numerous synthetic applications.
Duffy, Brian C
core   +1 more source

I. Contorted Polycyclic Aromatic Hydrocarbons: Attempted Synthesis Of [12]circulene Derivatives Ii. Synthesis And Characterization Of Novel [1]benzothieno[3,2-B][1]benzothiophene Derivatives [PDF]

open access: yes, 2019
There has been increasing interest in the development of organic materials due to their unique structural and electronic properties. Organic compounds have the advantage of being able to be deposited from solution, leading to low-cost, high-area ...
Hollin, Jonathan
core   +1 more source

STRATEGI BARU VALORISASI PRODUK SAMPING KALKOPIRIT INDONESIA: Pelindian Langsung Menggunakan Eutectic Ionic Liquids (EILs) Untuk Pungut Ulang Logam Kritis Produk Samping Sumber Primer [PDF]

open access: yes
Logam kritis produk samping pada kalkopirit dapat dimanfaatkan sebagai teknologi energi bersih. Logam kritis produk samping yang terdapat pada kalkopirit ialah Mn, Co, Zn, Ga, Se, In, Sn, Sb, Hg, Ti, dan Bi.
Ahmad Mudzakir, -   +2 more
core  

Synthesis and biomechanistic studies of quinocarcin and structural analogs [PDF]

open access: yes, 1995
1995 Spring.Includes bibliographical references.The formal total synthesis of the antitumor antibiotic quinocarcin is presented. The synthesis is characterized by a novel NBS oxidative azomethine ylide cycloaddition reaction for the diastereoselective ...
Flanagan, Mark Edward
core  

SIGMATROPIC REARRANGEMENTS OF DIVINYLCYCLOPROPANES AND CYCLIZATIONS INVOLVING β-ELIMINATION OF SULFONYL RADICALS [PDF]

open access: yes, 2014
The first chapter of this dissertation describes the synthesis and reactions of a family of 1,1-divinylcyclopropanes, including the discovery and studies of several sigmatropic rearrangement cascades.
Hay, Everett Ben
core  

Degradable poly(L-lactic acid)/poly(vinyl acetate) blend for local release of nitric oxide [PDF]

open access: yes, 2018
Orientador: Marcelo Ganzarolli de OliveiraDissertação (mestrado) - Universidade Estadual de Campinas, Instituto de QuímicaResumo: Muitas pesquisas têm sido realizadas visando o desenvolvimento de biomateriais poliméricos degradáveis como sistemas de ...
Barbosa, Alexandre Dias, 1992-
core  

Thermodinamic analysis of phase equilibria, volumetric anda transport properties of multicomponent systems of ionic liquids and organic solvents [PDF]

open access: yes, 2019
U ovoj doktorskoj disertaciji eksperimentalno su određene rastvorljivosti binarnih i pseudo - binarnih smeša, odnosno termodinamičke ravnoteže tečno - tečno i čvrsto - tečno, kao i uticaj dodavanja različitih ko - rastvarača na pomeranje fazne ravnoteže,
Soldatović, Danijela
core  

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