N1-Selective Methylation of Pyrazoles via α-Halomethylsilanes as Masked Methylating Reagents
作者:Emma Yang、Derek M. Dalton
DOI:10.1021/acs.joc.3c02841
日期:2024.3.15
The development of a highlyselective N-methylation of pyrazole heterocycles using commercially available, bench-stable α-halomethylsilanes as masked methylatingreagents is described. Sterically bulky α-halomethylsilanes significantly improve the selectivity of N-alkylation over traditional methylatingreagents and readily undergo protodesilylation in the presence of a fluoride source and water to