[EN] DIHYDROPYRAZOLOPYRIMIDINONE COMPOUNDS AS PDE2 INHIBITORS<br/>[FR] COMPOSÉS DIHYDROPYRAZOLOPYRIMIDINONE UTILISÉS EN TANT QU'EN TANT QU'INHIBITEURS DE PDE2
申请人:MERCK SHARP & DOHME
公开号:WO2016192083A1
公开(公告)日:2016-12-08
The present invention is directed to dihydropyrazolopyrimidinonecompounds of formula (I) which are useful as therapeutic agents for the treatment of central nervous system disorders associated with phosphodiesterase 2 (PDE2). The present invention also relates to the use of such compounds for treating neurological and psychiatric disorders, such as schizophrenia, psychosis, Parkinson's disease, Parkinson's disease dementia (PDD), or Huntington's disease, and those associated with striatal hypofunction or basal ganglia dysfunction.
The present invention relates to pentafluoroethylating compositions, processes for obtaining them, and their use in pentafluoroethylation reactions.
本发明涉及五氟乙基化组合物,获取它们的过程,以及它们在五氟乙基化反应中的应用。
From C
<sub>1</sub>
to C
<sub>2</sub>
: TMSCF
<sub>3</sub>
as a Precursor for Pentafluoroethylation
作者:Qiqiang Xie、Lingchun Li、Ziyue Zhu、Rongyi Zhang、Chuanfa Ni、Jinbo Hu
DOI:10.1002/anie.201807873
日期:2018.10
A highly efficient copper‐mediated aromatic pentafluoroethylation method using TMSCF3 as the sole fluoroalkyl source is described. The reaction proceeds by a key C1 to C2 process, that is, the generation of CuCF3 from TMSCF3, followed by a subsequent spontaneous transformation into CuC2F5. Various aryl iodides were pentafluoroethylated with the TMSCF3‐derived CuC2F5. This method represents the first
TMSCF
<sub>3</sub>
as a Convenient Source of CF
<sub>2</sub>
=CF
<sub>2</sub>
for Pentafluoroethylation, (Aryloxy)tetrafluoroethylation, and Tetrafluoroethylation
作者:Lingchun Li、Chuanfa Ni、Qiqiang Xie、Mingyou Hu、Fei Wang、Jinbo Hu
DOI:10.1002/anie.201705734
日期:2017.8.7
A new method for the on-site preparation of tetrafluoroethylene (TFE) and a procedure for its efficient use in pentafluoroethylation by fluoride addition were developed by using a simple two-chamber system. The on-site preparation of TFE was accomplished by dimerization of difluorocarbene derived from (trifluoromethyl)trimethylsilane (TMSCF3) under mild conditions. Other fluoroalkylation reactions