SCHEDULED MAINTENANCE
Cyanoethylation of some hydroxycoumarins has been investigated. The cyanoethyl derivatives obtained were hydrolysed to the corresponding acids. Cyclisation of the acids gave benzodipyrans.
J. R. Merchant and J. R. Patell, J. Chem. Soc. C, 1969, 1544 DOI: 10.1039/J39690001544
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