Tetrahedron p. 9223 - 9240 (1995)
Update date:2022-08-11
Topics:
Armesto, Diego
Gallego, Mar G.
Horspool, William M.
Agarrabeitia, Antonia R.
A novel synthetic route to chrysanthemic acid, 2-cyclopentylidenmethyl-3,3-dimethylcyclopropanecarboxylic acid, fluorenespiro-2,2-dimethylcyclopropanecarboxylic acid and indenespiro-2,2-dimethylcyclpropanecarboxylic acid, all of them present in pyrethroids of known insecticidal activity, is described.The key step in the synthesis is the aza-di-?-methane rearrangement of some 1-aza-1,4,6-trienes and some 1-aza-1,4-dienes, using triplet sensitization.
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Doi:10.1021/jo00885a007
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(2021)Doi:10.1016/j.jphotochem.2020.112372
(2020)
