SUBSTITUTED PYRIMIDINE COMPOUND AND PREPARATION METHOD AND USE THEREOF
申请人:SHENYANG SINOCHEM AGROCHEMICALS R&D CO., LTD.
公开号:US20210015100A1
公开(公告)日:2021-01-21
The present invention discloses a substituted pyrimidine compound. The structure is shown in general formula I. The definition of each substituent in the formula is described in the description. The compound of the present invention has broad-spectrum fungicidal, insecticidal and acaricidal activity, and has excellent control effects on cucumber downy mildew, powdery mildew, corn rust, anthrax, rice blast, aphids,
Tetranychus cinnabarinus
and the like.
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