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6,6-Dimethyl-4,8-dioxospiro[2.5]octane-1,1,2,2-tetracarbonitrile in the synthesis of heterocyclic compounds of the 2,3-dihydrofuran and 5,6,7,8-tetrahydro-4h-chromene series

✍ Scribed by O. V. Kayukova; P. M. Lukin; Ya. S. Kayukov; O. E. Nasakin; V. N. Khrustalev; V. N. Nesterov; M. Yu. Antipin

Publisher
Springer US
Year
1998
Tongue
English
Weight
562 KB
Volume
34
Category
Article
ISSN
0009-3122

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2-Amino-8-oxo-tetrahydro-4H-chromene-3-carbonitriles were synthesized for the first time from a tandem Michael addition - cyclization reaction between cyclohexane-1,2-dione and benzylidenemalononitriles. An enantioselective synthesis of these compounds was achieved in moderate ee values (up to 63% e