3-Substituted-7-alkoxy-2,2'-Spirobi[2H-1-benzopyrans]

Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Polymers from only ethylenic monomers or processes of...

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568313, 549344, 430541, C08F23402, C07D31196

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active

043485081

ABSTRACT:
Substituted Spirobi[2H-1-benzopyrans] particularly suitable for use as precursors to stable colored pyrylium salts are disclosed.

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Feichtmayr et al., Liebigs Ann. Chem., 1979(9), 1337-1345.

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