Chemistry of Heterocyclic Compounds p. 107 - 111 (1995)
Update date:2022-08-04
Topics:
Kuroyan, R. A.
Pogosyan, S. A.
Grigoryan, N. P.
The diethyl esters of 2-oxo-1-oxaspiro<4,4>nonan-3,4-dicarboxylic, 2-oxo-1-oxaspiro<4,5>decan-3,4-dicarboxylic and 7,7-di-methyl-1,8-dioxaspiro-<4,5>decan-3,4-dicarboxylic acids (Ia-c) are transformed by hydrochloric acid into 2-oxo-1-oxa-spiro<4,4>nonan-
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