PROCESS FOR PRODUCING OXYCARBONYL-SUBSTITUTED PIPERAZINE DERIVATIVE
申请人:Toray Fine Chemicals Co., Ltd.
公开号:EP1548010A1
公开(公告)日:2005-06-29
If an organic solvent with a water content of 15% or less is used when an oxycarbonyl-substituted piperazine derivative is produced from a piperazine derivative, the piperazine derivative can be oxycarbonylated.
Process for producing oxycarbonyl-substituted piperazine derivative
申请人:Morimoto Masao
公开号:US20060161003A1
公开(公告)日:2006-07-20
If an organic solvent with a water content of 15% or less is used when an oxycarbonyl-substituted piperazine derivative is produced from a piperazine derivative, the piperazine derivative can be oxycarbonylated.
Photoinduced dehydrogenation of protected piperazines
作者:Kokoro Nowaki、Bumpei Maeda、Kei Murakami
DOI:10.1093/chemle/upae024
日期:2024.3.1
Piperazine represents one of the most important building blocks of pharmaceuticals. Hence, the development of various piperazine derivatives is important. Herein we report photoinduced dehydrogenation of protected piperazines. The reaction proceeded with various alkyl-substituted piperazines. The resulting products have electron-rich olefin moieties that can react with benzyne, carbene, or acyl anhydride
Abstract The influence of microwave irradiation on the reaction of various amines with benzyl chloroformate and di‐tert‐butyl dicarbonate was investigated. Microwave irradiation was successfully applied to the carbamoylation of several nonfunctionalized and functionalized amines, including amino acids and nucleobases, leading to satisfactory to high product conversion within very short reaction times