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Paper | Regular issue | Vol 32, No. 7, 1991, pp.1387-1390
Published online, 1st January, 1970
DOI: 10.3987/COM-91-5772
Synthesis of 4-(Tributylstannyl)pyridazines by Inverse Electron-demand Diels-Alder Reaction of 1,2,4,5-Tetrazines with Tributylstannylacetylenes

Takao Sakamoto, Nobuyuki Funami, Yoshinori Kondo, and Hiroshi Yamanaka*

*Pharmaceutical Institute, Tohoku University, Aobayama, Sendai 980-8578, Japan


Inverse electron-demand Diels-Alder reaction of 3,6-disubstituted 1,2,4,5-tetrazines with tributylstannylacetylenes containing a substituent gave 4-(tributylstannyl)pyridazines. Particularly, dimethyl 1,2,4,5-tetrazine-3,6-dicarboxylate gave 4-(tributylstannyl)pyridazines in good yields. Substitution reaction of 3,6-diphenyl-4-(tributylstannyl)pyridazine was also described.