Results 81 to 90 of about 818 (181)

Alok 1

, 2010
A new class of highly efficient, convenient and rapid synthesis of fluorine substituted thiosemicarbazide derivatives containing different functional groups have been obtained by the condensation reactions of substituted phenyl-isothiocyanate with R ...
Administrator, Alok K Pareek, P E Joseph, Daya S Seth   +3 more
core  

A step-economical multicomponent synthesis of 3D-shaped aza-diketopiperazines and their drug-like chemical space analysis

, 2016
International audienceA rapid and atom economical multicomponent synthesis of complex aza-diketopiperazines (aza-DKPs) driven by Rh(I)-catalyzed hydroformylation of alkenylsemicarbazides is described.
Bonnet, Dominique, Rognan, Didier, Riché, Stéphanie, Girard, Nicolas, Regenass, Pierre, Péron, Florent, Hibert, Marcel   +6 more
core   +1 more source

Pathway complexity in fibre assembly: from liquid crystals to hyper-helical gelmorphs. [PDF]

Chem Sci, 2023
Contreras-Montoya R, Smith JP, Boothroyd SC, Aguilar JA, Mirzamani M, Screen MA, Yufit DS, Robertson M, He L, Qian S, Kumari H, Steed JW.   +11 more
europepmc   +1 more source

Preparation of N, 2-diaryldiazenecarboxamides under solvent-free condition using active manganese dioxide on acidic silica gel as the oxidant

, 2002
220-221A mild and efficient synthesis of N, 2-diaryldiazenecarboxamides (ArNHCON=NPh) can be easily achieved by the oxidation of aryl substituted semicarbazides (ArNHCONHNHPh) using active manganese dioxide on sulfuric acid silica gel as the ...
Zhang, Geng, Wang, Yulu, Wanga, Hong, Li, Jianping   +3 more
core  

Synthesis and Structure of 1-(1,2,3-Thiadiazolylcarbonyl)-4-(1,2,3-thiadiazolyl)semicarbazide Derivatives

Novel unknown potentially biologically active 1-(1,2,3-thiadizolylcarbonyl)-4-(1,2,3-thiadiazolyl)-semicarbazides were synthesized by reactions of 1,2,3-thiadiazolylcarboxylic acid hydrazides with 1,2,3- thiadizolylcarbonyl azide in high yields.
Khrustalev V.N., Dorovatovskii P.V., Glukhareva T.V., Khamidullina L.A., Kalinina T.A.   +4 more
core   +1 more source

Synthesis, characterization, and in vitro antimicrobial activities of 5-alkenyl/hydroxyalkenyl-2-phenylamine-1,3,4-oxadiazoles and thiadiazoles

, 2010
The long-chain alkenoic acid hydrazides ( 1a– d) on reaction with phenylisocyanate and phenylthiocyanate gave their corresponding semicarbazides ( 2a– d) and thiosemicarbazides ( 4a– d), which on further refluxing with POCl 3 and Ac 2O yielded ...
Rauf, Abdul, Ahmad, Anis, Farshori, Nida N, Khan, Asad U, Banday, Mudasir R   +4 more
core   +1 more source

Risk communication guidelines for Europe: a modest proposition

, 2010
The purpose of this paper is to firstly develop a series of so-called risk communication guidelines via the risk perception and communication literatures that in turn can be used by media, industry and regulators.
Lofstedt, Ragnar E.
core   +1 more source

Thiocarbamate-Based Synthesis of 2,4,5,6-Tetrahydro-3H-1,2,4-Triazepine-3-Thiones

, 2017
A five-step synthesis of 5,7-diaryl-substituted 2,4,5,6-tetrahydro-3H-1,2,4-triazepine-3-thiones starting from ethyl thiocarbamate was developed. The synthesis included a three-component condensation of ethyl thiocarbamate with aromatic aldehydes and p ...
Maxim O. Zimin, Anatoly D. Shutalev, Ludmila A. Trafimova   +2 more
core   +1 more source

Methyl-substituted Semicarbazides. [PDF]

Acta Chemica Scandinavica, 1977
K. A. Jensen, Martin Nilsson, Olof Wennerström, R. B. Jensen, Gustav Schroll, D. H. Williams, Anne-Marie Pilotti   +6 more
openaire   +1 more source

Synthesis of new type azo compounds by 4-hydroxy-2,2,6,6-tertramethyl-1-piperidinyloxyl as the phase transfer dehydrogenation catalyst

, 2000
542-544Use of 4-hydroxy-2,2,6,6-tetramethyl-1-piperidinyloxyl as the phase transfer dehydrogenation catalyst to prepare azo compounds is reported for the first time.
Wang, Cailan, Wang, Yulu, Wang, Hong, Zhang, Zhiyi, Li, Jianping, Wang, Xiaoyang   +5 more
core