Tetrahedron Letters p. 6379 - 6382 (1996)
Update date:2022-08-05
Topics:
Palacios, Francisco
Rubiales, Gloria
Aza-Wittig reaction of N-vinylic phosphazenes derived from diphenylmethylphosphine 4 with carbonyl compounds leads to the formation of 2-azadienes derived from β-aminoacids 5. Dimerization of 2-azadienes 5c,d and reaction of compounds 5 with phosphazene 4 or enemine 6 affords substituted dihydropyridines 7 and 8. Aza-Wittig reaction of phosphazenes 4 with α,β-unsaturated aldehydes gives 3-azatrienes 12, which are easily converted into pyridines 13.
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Doi:10.1021/jo01361a600
(1957)Doi:10.1002/jhet.5570330418
(1996)Doi:10.1016/0040-4039(96)01437-2
(1996)Doi:10.1016/j.tetlet.2004.01.046
(2004)Doi:10.1016/0040-4020(96)00798-3
(1996)Doi:10.1016/0040-4020(96)00801-0
(1996)