《Green and efficient synthesis of fluorescent bis(pyrazolyl)methanes in choline chloride/urea deep eutectic solvent》 was written by Zonouz, Adeleh Moshtaghi; Beiranvand, Masoumeh; Mohammad-Rezaei, Rahim; Naderi, Soheila. Related Products of 6630-33-7 And the article was included in Letters in Organic Chemistry in 2020. The article conveys some information:
A series of pyrazole-based heteroaromatic compoundsI [R=H, 2-Me, 3-Me, 2-MeO, etc.] were synthesized by the reaction of 3-methyl-5-pyrazolone and aromatic aldehydes in Choline chloride/urea DES as a green solvent. This simple and green procedure has advantages such as easy operation, short reaction times, efficient yields, low cost and min. use of hazardous solvents and catalysts. The structure of compounds was determined by IR, 1H and 13C NMR spectra, and the crystal structure of compoundI [R=H] was confirmed using X-ray crystallog. anal. The optical properties of Pyrazole derivatives compoundsI [R=H, 2-Me, 3-Me, 2-MeO, etc.] was also studied with UV/vis and fluorescence spectroscopy. All of these pyrazole-containing heteroaromatic compounds displayed maximum emission peak from 340 to 360 nm. After reading the article, we found that the author used o-Bromobenzaldehyde(cas: 6630-33-7Related Products of 6630-33-7)
o-Bromobenzaldehyde(cas: 6630-33-7) is used in L-threonine aldolase-catalyzed enantio/diastereoselective aldol reactions.Related Products of 6630-33-7Synthetic applications of o-Bromobenzaldehyde include: synthesis of aza-fused polycyclic quinolines through copper-catalyzed cascade reaction, preparation of 1-substituted indazoles by CuI-catalyzed coupling with N-aryl hydrazides.
Referemce:
Bromide – Wikipedia,
bromide – Wiktionary