22114-38-1Relevant articles and documents
2-Arylvinylpyrimidines versus 4-arylvinylpyrimidines: Synthesis and comparison of the optical properties
Achelle, Sylvain,Robin-Le Guen, Fran?oise
, p. 4491 - 4496 (2013)
Condensation of donor-substituted aldehydes on methylpyrimidine led to two series of fluorescent molecules depending on the position of the methyl group. Whereas highly emissive 4-arylvinylpyrimidine derivatives are well-known, this is the first example of fluorescent 2-arylvinylpyrimidine compounds. The optical properties of the two families have been thoroughly compared. Whereas the series derived from 2-methylpyrimidine exhibit a blue shift in absorption and emission in comparison with 4-arylvinylpyrimidine, the influence of the position is less predictable on the fluorescence quantum yield. These compounds also exhibit halochromism: when adding acid, a bathotromic shift is observed in absorption whereas an increase of the fluorescence intensity which is red-shifted except for amino derivatives (a progressive quench of emission is observed in these cases). An emission solvatochromism study has shown that a higher intramolecular charge transfer seems to occur in 2-arylvinylpyrimidines than in 4-arylvinylpyrimidines.
A novel tautomerism in alkyl dihydropyrimidines: Observation of tautomerism by H-D exchange of 2- and/or 4-methyl protons of dihydropyrimidines in CD3OD
Kim, Yong Hae,Lim, Byoung Uk
, p. 2057 - 2060 (1991)
A novel tautomerism was found in dihydropyrimidines such as 2-amino-4,6,6-trimethyldihydropyrimidine 1 and 2,4,6,6-tetramethyldihydropyrimidine 2 by the observation of H-D exchange on both 4-methyl protons of 1 and 2,4-dimethyl protons of 2 by the treatme
Iron Catalyzed Synthesis of Pyrimidines Under Air
Mondal, Rakesh,Sinha, Suman,Das, Siuli,Chakraborty, Gargi,Paul, Nanda D.
supporting information, p. 594 - 600 (2019/12/15)
Herein we report an iron-catalyzed multicomponent dehydrogenative functionalization of alcohols to pyrimidines under atmospheric conditions. Using a well-defined Fe(II)-complex featuring redox noninnocent 2-phenylazo-(1,10-phenanthroline) ligand, as a cat
Cooperative ruthenium complex catalyzed multicomponent synthesis of pyrimidines
Maji, Milan,Kundu, Sabuj
supporting information, p. 17479 - 17487 (2019/12/23)
A new set of 2-(2-benzimidazolyl) pyridine ligand based air and moisture stable ruthenium complexes were synthesized and characterized. The catalytic behaviors of these complexes were evaluated towards the multicomponent synthesis of highly substituted py