The intermolecular deacylative coupling of unstrained ynones via C-C bond activation was accomplished by a CuCl-bpy system undermild reaction conditions. This protocol features facile cleavage of the C-C bond at room temperature, broad substrate scope, and efficient construction of important symmetric and unsymmetrical 1,3-diyne adducts through homo or cross coupling of ynones, respectively. The preliminary
[EN] 4-AMINO-5-PHENYL-7-CYCLOHEXYL-PYRROLO[2,3-d]PYRIMIDINE DERIVATIVES<br/>[FR] DERIVES DE 4-AMINO-5-PHENYL-7-CYCLOHEXYL-PYRROLO[2,3-D]PYRIMIDINE
申请人:NOVARTIS AG
公开号:WO2004043962A1
公开(公告)日:2004-05-27
The invention relates to new 4-amino-5-phenyl-7-cyclohexyl-pyrrolo[2,3-d] pyrimidine derivatives, processes for the preparation thereof, the application thereof in a process for the treatment of the human or animal body, the use thereof - alone or in combination with one or more other pharmaceutically active compounds - for the treatment of a disease, especially a proliferative disease, such as a tumour disease, a method for the treatment of such diseases in mammals, especially in humans, and the use of such a compound - alone or in combination with one or more other pharmaceutically active compounds - for the preparation of a pharmaceutical composition (medicament) for the treatment especially of a proliferative disease, such as a tumour.
Catalytic Synthesis of Trifluoromethylated Allenes, Indenes, Chromenes, and Olefins from Propargylic Alcohols in HFIP
作者:Florent Noël、Vuk D. Vuković、Jing Yi、Edward Richmond、Pavle Kravljanac、Joseph Moran
DOI:10.1021/acs.joc.9b02398
日期:2019.12.20
A general method to access CF3-substituted allenesfrom propargylic alcohols under Lewis acid catalysis in 1,1,1,3,3,3-hexafluoro-2-propanol (HFIP) as solvent is described. By tuning the reaction time and temperature, the obtained allenes rearrange to 1,3-biaryl-1-trifluoromethyl-1H-indenes. By tuning the structure of the propargylic alcohol substrates, a range of trifluoromethylated 2H-chromenes were
Efficient Multigram Approach to Acetylenes and CF
<sub>3</sub>
‐ynones Starting from Dichloroalkenes Prepared by Catalytic Olefination Reaction (COR)
作者:Vasiliy M. Muzalevskiy、Zoia A. Sizova、Arstan I. Diusenov、Alexey V. Shastin、Valentine G. Nenajdenko
DOI:10.1002/ejoc.202000531
日期:2020.7.23
Efficient two step approach towards terminal acetylenes was elaborated. At the first step, dichloroalkenes were prepared in up to 88 % yields by catalytic olefination reaction COR of arylaldehydes. Treatment of dichloroalkenes with n BuLi effectively led to the corresponding alkynes in up to 97 % yield. A versatile one pot procedure towards CF3‐ynones was elaborated to give these products in up to
Enantioselective Synthesis of Tertiary Propargylic Alcohols under N-Heterocyclic Carbene Catalysis
作者:Eduardo Sánchez-Díez、Maitane Fernández、Uxue Uria、Efraim Reyes、Luisa Carrillo、Jose L. Vicario
DOI:10.1002/chem.201501044
日期:2015.6.1
A straightforward procedure to carry out the enantioselective benzoin reaction between aldehydes and ynones by employing a chiral N‐heterocyclic carbene (NHC) as catalyst was developed. Under the optimized reaction conditions, these ynones undergo a clean and selective 1,2‐addition with the catalytically generated Breslow intermediate, not observing any byproduct arising from competitive Stetter‐type