Modular Access to Ketones via Cooperative NHC/Pd-Catalyzed C–H Alkylation of Aldehydes with Alkyl Bromides
作者:Ying Huang、You-Feng Han、Chun-Lin Zhang、Song Ye
DOI:10.1021/acscatal.3c02844
日期:2023.8.18
Direct C–H alkylation of aldehydes represents a straightforward and step-economy strategy for modular access to ketones. Herein, we report a direct C–H alkylation of aldehydes with alkyl bromides to generate ketones under cooperative NHC/Pd catalysis at room temperature. Secondary and the difficult-to-obtain tertiary alkyl-derived ketones could be prepared through this simple process under mild conditions
3,4-Di-substituted cyclobutene-1,2-diones as CXC-chemokine receptor ligands
申请人:Schering Corporation and Pharmacopeia, Inc.
公开号:US20040147559A1
公开(公告)日:2004-07-29
There are disclosed compounds of the formula
1
or a pharmaceutically acceptable salt or solvate thereof which are useful for the treatment of chemokine-mediated diseases such as acute and chronic inflammatory disorders and cancer.