UNEXPECTED PRODUCTS IN THE REACTIONS OF s-TETRAZINE HYDRAZONES WITH ENAMINES
作者:Gennady L. Rusinov、Rashida I. Ishmetova、Ilya N. Ganebnykh、Oleg N. Chupakhin、Grigory G. Aleksandrov、Igor A. Litvinov、Dmitry B. Krivolapov
DOI:10.1515/hc.2003.9.1.39
日期:2003.1
facilitate their [4+2]cycloaddition to alkenes, whereas electron donating groups, such as amino or hydrazino ones suppress this reaction.' Recently we have demonstrated that dimethylpyrazole groups in the 3rd and the 6th position of the tetrazine ring are suitable substituents for cycloadditionreaction with alkenes including enamines. In this paper we wish to present the results of our studies in which we have