The cycloaddition reactions of "all-carbon" 1,3-diazabuta-1,3-dienes with a few conjugated and unconjugated alkynyl ketenes are described. The reactions provide some interesting azetidinones and dihydropyrimidinones bearing an alkynyl moiety. The regiochemistry of cycloadduct is related with the degree of conjugation of the alkynyl ketene. Moreover, two alternative approaches to "all-carbon" 1,3-diazabuta-1,3-dienes are reported.
Cycloaddition reactions of 1,3-diazabuta-1,3-dienes with alkynyl ketenes / G. Abbiati, A. Contini, D. Nava, E. Rossi. - In: TETRAHEDRON. - ISSN 0040-4020. - 65:24(2009), pp. 4664-4670.
Cycloaddition reactions of 1,3-diazabuta-1,3-dienes with alkynyl ketenes
G. Abbiati
Primo
;A. ContiniSecondo
;D. NavaPenultimo
;E. RossiUltimo
2009
Abstract
The cycloaddition reactions of "all-carbon" 1,3-diazabuta-1,3-dienes with a few conjugated and unconjugated alkynyl ketenes are described. The reactions provide some interesting azetidinones and dihydropyrimidinones bearing an alkynyl moiety. The regiochemistry of cycloadduct is related with the degree of conjugation of the alkynyl ketene. Moreover, two alternative approaches to "all-carbon" 1,3-diazabuta-1,3-dienes are reported.File | Dimensione | Formato | |
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