Unexpected [3 + 2] cycloaddition between ethyl α-(N,N-dimethylamino)pentadienoate and acrylonitrile
作者:Mireille Bourhis、Joseph Vercauteren
DOI:10.1016/s0040-4039(00)73027-9
日期:1994.3
The reaction of ethyl 2-(N,N-dimethylamino)penta-2,4-dienoate 4 with acrylonitrile 2-gave the methyl N-methyl-2-(2-propenyl)-3-cyano-pyrrolidine-2-carboxylate 5a and 5b as a [3 + 2]-atoms ''cycloadducts''. The putative [1,3] dipolar intermediate species azomethine ylide 4c, results from [1,6] hydrogen shift of one N(CH3) proton.
Bourhis Mireille, Vercauteren Joseph, Tetrahedron Lett, 35 (1994) N 13, S 1981-1984
作者:Bourhis Mireille, Vercauteren Joseph
DOI:——
日期:——
STEVENART-DE, MESMAEKER N.;MERENYI, R.;VIEHE, H. G., TETRAHEDRON LETT., 28,(1987) N 23, 2591-2594
作者:STEVENART-DE, MESMAEKER N.、MERENYI, R.、VIEHE, H. G.
DOI:——
日期:——
Synthesis of dienes with 1,1-Captodative substitution
作者:N Stévenart-De Mesmaeker、R Merényi、H.G Viehe
DOI:10.1016/s0040-4039(00)96155-0
日期:1987.1
1,1-Captodative butadienes carrying amino, thioether or methoxy groups combined with nitrile and ester substituents were synthesized via a [3,2] sigmatropic rearrangement, an alkylation-halogenation-dehydrohalogenation sequence or via the Wittig-Horner reaction.