Cyclic 2-methyl-2,4-dialkoxy-3-buten-1-al-acetals, their prepara

Details Cyclic 2-methyl-2,4-dialkoxy-3-buten-1-al-acetals, their prepara Cyclic 2-methyl-2,4-dialkoxy-3-buten-1-al-acetals, their prepara

1977-12-09

1978-10-17

Love, Ethel G.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

260598, 260615A, C07D31904

Patent

active

041208684

ABSTRACT:
New acetals, containing a 6-membered ring, of 2-methyl-2,4-dialkoxy-3-buten-1-al, are obtained by reacting the corresponding 2-methyl-2-alkoxy-3-butyn-1-al-acetals with a mixture of the appropriate alcohol and an alkali metal alcoholate of the said alcohol at from 100.degree. to 200.degree. C. The acetals are intermediates for the preparation of carotinoid-based physiologically safe food dyes.

REFERENCES:
chem. Abstracts 77:101483e.
Chem. Abstracts 83:166706y.

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