[EN] 2, 3, 6-TRISUBSTITUTED-4-PYRIMIDONE DERIVATIVES<br/>[FR] DERIVES DE 2,3,6-TRISUBSTITUE 4-PYRIMIDONE
申请人:MITSUBISHI PHARMA CORP
公开号:WO2004085408A1
公开(公告)日:2004-10-07
A pyrimidone derivative having tau protein kinase 1 inhibitory activity which is represented by formula (I) or a salt thereof, or a solvate thereof or a hydrate thereof; useful for prventive and/or therapeutic treatment of diseass such as neurodegenerative diseases (e.g. Alzheimer disease); wherein Q represents CH or nitrogen atom; R represents a C1-C12 alkyl group; the ring of Formula (I): represents piperazine ring or piperidine ring; each X independently represents a C1-C8 alkyl group, an optionally partially hydrogenated C6-C10 aryl ring, an indan ring or the like; m represents an integer of 1 to 3; each Y independently represents a halogen atom, a hydroxy group, a cyano group, a C1-C6 alkyl group or the like; n represents an integer of 0 to 8; when X and Y or two Y groups are attached on the same carbon atom, they may combine to each other to form a C2-C6 alkylene group.
Direct α-Acylation of Alkenes via N-Heterocyclic Carbene, Sulfinate, and Photoredox Cooperative Triple Catalysis
作者:Kun Liu、Armido Studer
DOI:10.1021/jacs.1c01022
日期:2021.4.7
excellent functional group tolerance. Mechanistic studies reveal that these cascades proceed through a sequential radical addition/coupling/elimination process. In contrast to known triple catalysis processes that operate via two sets of interwoven catalysiscycles, in the introduced process, all three cycles are interwoven.
Palladium‐Catalyzed Annulation of Acyl Fluorides with Norbornene via Decarbonylation and CO Reinsertion
作者:Yuka Sakurai、Yohei Ogiwara、Norio Sakai
DOI:10.1002/chem.202001374
日期:2020.10.9
A palladium‐catalyzed annulation of acyl fluorides with norbornene is described. This study reports the first example of an annulation of acyl fluorides in the presence of a transition‐metal catalyst. Polycyclic ketones are obtained from the cleavage of the C−F and C−H bonds of the acyl fluoride and the rearrangement of the carbonyl moiety by decarbonylation and CO reinsertion.
decarbonylative conversions of acylfluorides were developed using a Pd(OAc)2/Et3SiH combination. When tricyclohexylphosphine (PCy3) was used as the ligand, aldehydes were obtained as simple reductive conversion products. The use of 1,2-bis(dicyclohexylphosphino)ethane (Cy2P(CH2)2PCy2, DCPE) as the ligand, however, favored the formation of hydrocarbons, which are decarbonylative reduction products.
Synthesis of Acyl Fluorides from Carboxylic Acids Using NaF-Assisted Deoxofluorination with XtalFluor-E
作者:Marie Gonay、Chloé Batisse、Jean-François Paquin
DOI:10.1021/acs.joc.0c01377
日期:2020.8.7
The synthesis of acyl fluorides using the deoxofluorination reaction of carboxylicacids using XtalFluor-E is described. This transformation, assisted by a catalytic amount of NaF, occurs at roomtemperature in EtOAc, where XtalFluor-E behaves as the activating agent and the fluoride source. A wide range of acyl fluorides were obtained in moderate to excellent yields (36–99%) after a simple filtration