Substituted pyridine methyl esters of naphthyl acids
申请人:Zoecon Corporation
公开号:US04223033A1
公开(公告)日:1980-09-16
Pyridyl esters and thiolesters of naphthyl acids, intermediates therefor, synthesis thereof and the use of said esters and thiolesters and compositions for the control of pests.
The present invention provides a process for preparing a heterocyclic aldehyde by oxidizing a heterocyclic alcohol with high selectivity and high yield. Specifically, the heterocyclic aldehyde is prepared by reacting a heterocyclic compound having at least one hydroxymethyl group bonded to a carbon atom of a heterocyclic ring with a hypohalogenous acid salt in the presence of a base to oxidize the hydroxymethyl group, wherein reaction is conducted in the co-presence of a 2,2,6,6-tetramethylpiperidine-1-oxyl derivative having at least two 2,2,6,6-tetramethylpiperidine-1-oxyl-4-yl groups.
Photochemical C–H Silylation and Hydroxymethylation of Pyridines and Related Structures: Synthetic Scope and Mechanisms
作者:Fatima Rammal、Di Gao、Sondes Boujnah、Aqeel A. Hussein、Jacques Lalevée、Annie-Claude Gaumont、Fabrice Morlet-Savary、Sami Lakhdar
DOI:10.1021/acscatal.0c03726
日期:2020.11.20
Considering the synthetic relevance of heteroarenes in various areas ranging from organic synthesis to medicinal chemistry, developing practically simple methodologies to access functionalized heteroarenes is of a significant value. Described herein is an efficient approach for C–H silylation and hydroxymethylation of pyridines and related heterocycles by the combination of silanes or methanol with readily