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- W2000450857 abstract "Methyl and ethyl 7,8-diphenylazocine-2-carboxylate have been prepared by the reaction of dimethyl tricyclo[4,2,2,02,5]deca-3,7,9-triene-7,8-dicarboxylate with methyl or ethyl 5,6-diphenyl-1,2,4-triazine-3-carboxylate. The flexibility of this azocine ring system has been studied by p.m.r. spectroscopy and it was found that a higher temperature was required to effect rapid ring inversion in this case, in comparison with the related cyclooctatetraenes. A related bridged dihydroazocine (8) has been synthesized by the [π2s + π4s] cycloaddition of dimethyl tricyclo-[4,2,2,02,5]deca-3,9-diene-7,8-dicarboxylate to ethyl 5,6-diphenyl-1,2,4-triazine-3-car-boxylate. In contrast to previously described dihydroazocines, this compound exists entirely in the monocyclic form. Other [π2s + π4s] cycloadditions have also been described in which the π4s component was part of a triazine or a 3-azabicyclo-[4,2,0]octa-2,4-diene ring system." @default.
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- W2000450857 date "1972-01-01" @default.
- W2000450857 modified "2023-10-18" @default.
- W2000450857 title "A new synthesis of azocines" @default.
- W2000450857 doi "https://doi.org/10.1071/ch9720865" @default.
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