3,5-Diaminopyrazoles and 1,3,4-Oxadiazoles From Cyanoacetothioimidates

Influence of Regioisomerism in 9‐Anthracenyl‐Substituted Dithiodicyanoethene Derivatives on Photoinduced Electron Transfer Controlled By Intramolecular Charge Transfer

“… Studied isomeric fluorescent probes 1 , [7a] 2 and 3 as well as the reference compounds 4 , [9a] 5 , [9b] 6 , [9b] 7 [9c] and 9‐methylanthracene ( 8 ).…”

“…Further, we synthesized according to a procedure in the literature [9a] the cyano‐free fluorescent probe 4 as a reference compound. For further comparative studies, we synthesized the anthracene‐free molecules the bis(methylthio)maleonitrile ( 5 ), [9b] bis(methylthio)fumaronitrile ( 6 ), [9b] and bis(methylthio)malononitrile ( 7 ) [9c] …”

Chemistry and heterocyclization of carbohydrazides

“…2‐(2,3‐Dihydro‐2‐oxo‐1,3,4‐oxadiazol‐5‐yl)benzo‐heterocycles 152 were prepared by treatment of carbohydrazides 1 with excess of phosgene in methylene chloride at room temperature [103]. …”

“…Carbohydrazides 1 reacted with 153 in refluxing ethanol to give 2‐cyanomethyl‐5‐substituted‐1,3,4‐oxadiazole 154 [103]. …”

3‐Amino‐5‐cyanomethylpyrazole‐4‐carbonitrile: Versatile Reagent for Novel Bis(pyrazolo[1,5‐a]pyridine) Derivatives via a Multicomponent Reaction

“…Substituted aminopyrazoles are versatile and convenient intermediates for the synthesis of a wide variety of nitrogen‐containing heterocyclic compounds . They were also found to exhibit significant biological activities as antitumor , antifungal, and antibacterial agents .…”