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2005
Fused pyrrole derivatives
R 0160
Synthesis and Reductive Reactions of 2,3-Dioxo-2,3-dihydrobenzo[b]furo[2,3-f]-,
and -[3,2-e]indoles. — The reduction of the title compounds (IV), (IX), and
35- 131 -[2,3-g]-,
(X), prepared by Sandmeyer reaction from the corresponding derivatives (III) and
(VIII), is studied. The reduction with in situ prepared diborane leads to the benzo[b]furoindoles [cf. compounds (V), (XI), and (XIII)], while the use of LiAlH4 in Py as reducing agent allows to synthesize three novel hydroxybenzo[b]furoindoles [cf. derivatives (VI), (XII), and (XIV)]. — (KHOSHTARIYA, T. E.; MATNADZE, M. M.;
MIRZIASHVILI, N. T.; KURKOVSKAYA, L. N.; SIKHARULIDZE, M. I.;
DZHASHI, T. O.; Chem. Heterocycl. Compd. (N. Y.) 40 (2004) 11, 1454-1459;
Georgian Tech. Univ., Tbilisi 380075, Georgia; Eng.) — R. Staver
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