Chemistry of Heterocyclic Compounds p. 628 - 631 (1984)
Update date:2022-08-03
Topics:
Chunaev, Yu. M.
Przhiyalgovskaya, N. M.
Gal'bershtam, M. A.
Kurkovskaya, L. N.
Karpova, M. V.
The Fischer base reacts with α-ethyl-5-nitro-, 5-bromo-, and 3,5-dibromo-2-hydroxycinnamaldehydes to give bisindole spirochromans, with 3-bromo-5-nitro-2-hydroxycinnamaldehyde to give a mixture of a spirochroman and monoindole merocyanine, and with 3,5-dinitro-2-hydroxycinnamaldehyde to give only a merocyanine.The monoindole merocyanines obtained do not display a tendency to undergo intramolecular cyclization to give spiro-2H-oxocines.
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Doi:10.1016/0022-328X(84)80338-1
(1984)Doi:10.1021/ol052579h
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(1984)Doi:10.1021/np500385b
(2014)Doi:10.1016/j.bmc.2006.12.002
(2007)
