嘧啶并[1,2-A]苯并咪唑 、 盐酸 在
钯氢气 、 乙醚 作用下,
反应 9.0h,
以yielded the 1,2,3,4-tetrahydro-benzimidazo[1,2-a]pyrimidine hydrochloride in the form of colorless crystals, which的产率得到1,2,3,4-Tetrahydropyrimido[1,2-a]benzimidazole hydrochloride
参考文献:
名称:
Use of a Metal Complex as an N-Dopant for an Organic Semiconducting Matrix Material, Organic of Semiconducting Material and Electronic Component, and also a Dopant and Ligand and Process for Producing same
An efficient and mild synthesis of imidazo[1,2-a]pyrimidine derivatives has been developed from readily available pyrimidyl arylamines or enamines through a hypervalent iodine-promoted intramolecular C–H bond cycloamination reaction. This protocol allows for the facile construction of biologically active bicyclic imidazo[1,2-a]pyrimidine skeletons as well as other imidazo[1,2-a]-type fused heterocycles
one-pot protocol to synthesize 2-aminophenol derivatives via a palladium-catalyzedC–Hacetoxylation strategy with 5-nitropyrimidine as a directinggroup (DG), which can be easily preinstalled and readily removed under mild condition after the coupling. In addition, the transformation is operationally simple, has high functional group tolerance, and is amenable to gram-scale. Moreover, several examples
[EN] DEUTERATED HETEROCYCLIC COMPOUNDS AND THEIR USE AS IMAGING AGENTS<br/>[FR] COMPOSÉS HÉTÉROCYCLIQUES DEUTÉRÉS ET LEUR UTILISATION COMME AGENTS D'IMAGERIE
申请人:HOFFMANN LA ROCHE
公开号:WO2015173225A1
公开(公告)日:2015-11-19
The present invention relates to deuterated and optionally detectably labeled compounds of formula (I): R1-A-R2 and formula (V) and salts thereof, wherein Rl, R2, A, and X10-X19 have any of the values defined in the specification. Also included are pharmaceutical compositions comprising such compounds and salts, and methods of using such compounds and salts as imaging agents, in particular in measuring the radioactive signal of the compound associated with amyloid deposits and/or tau protein aggregates.
The present invention concerns antiviral compounds, their methods of preparation and their compositions, and use in the treatment of viral infections. More particularly, the invention provides heterocyclic substituted 2-methylbenzimidazole derivatives for the treatment of respiratory syncytial virus infection.
[EN] REGIO-SELECTIVE SYNTHESIS OF IMIDAZO[1,2-A]PYRIMIDINES<br/>[FR] SYNTHÈSE RÉGIO-SÉLECTIVE D'IMIDAZO[1,2-A]PYRIMIDINES
申请人:GENENTECH INC
公开号:WO2020227576A1
公开(公告)日:2020-11-12
A method of regio-selectively synthesizing an imidazo-pyrimidine compound of formulae (XXa) or (XXb) comprising a step of coupling a first compound of formula XX-P1a or XX-P1b with a second compound of formula XX-P2. This annulation reaction between β-ethoxy acrylamides and phosphorylated aminoimidazoles to furnish imidazo[1,2-a]pyrimidin-amines relies on steering effects from endocyclic and exocyclic phosphorylated aminoimidazoles. The reaction furnishes either 2-amino or 4-amino constitutional isomers of imidazo[1,2-a]pyrimidines with good yields and ranges of 90:10 – 99:1 regio-selectivity. The reaction is useful in the synthesis of various tracer molecules used in the study of neurological conditions such as where R3 and R4 together with the imidazole ring atoms to which they are bonded form a phenyl ring and the products are substituted benzimidazopyrimidines. The reaction can be generalized to form imidazo[1,2-a]pyrimidines substituted at either of their 2- and 4- positions by alkoxy or thioalkyl groups.