Dihydropiperazine Neonicotinoid Compounds. Synthesis and Insecticidal Activity
作者:Jack G. Samaritoni、David A. Demeter、James M. Gifford、Gerald B. Watson、Margaret S. Kempe、Timothy J. Bruce
DOI:10.1021/jf021185r
日期:2003.5.1
Syntheses of various isomeric dihydropiperazines can be approached successfully by taking advantage of the regioselective monothionation of their respective diones. Preparation of the precursor unsymmetrical N-substituted piperazinediones from readily available diamines is key to this selectivity. The dihydropiperazine ring system, as exemplified in 1-[(6-chloropyridin-3-yl)methyl]-4-methyl-3-oxop