Process for the preparation of condensation products of acetoace

Details Process for the preparation of condensation products of acetoace Process for the preparation of condensation products of acetoace

1977-12-01

1980-09-02

Trousof, Natalie

Organic compounds -- part of the class 532-570 series

Organic compounds

Carboxylic acid esters

560176, 568346, C07C 6966, C07C 6974

Patent

active

042207991

ABSTRACT:
The known condensation reaction of lower alkanoylacetic acid lower alkyl esters with aldehydes catalyzed by amines proceeds safe and in high yields if the amineis an aliphatic tertiary amine. The products are precursors of aromatic amines.

REFERENCES:
patent: 2798793 (1957-07-01), Moore
Naslund, Gunnel et al., "A New Synthesis of 1-Methyl-1-Cyclohexen-3-One and Related Compounds", Acta. Chem. Scand. 16 1329-36, (1962), See Chemical Abstracts (1963), No. 5529a.
Jones, G., "The Knoevenagel Condensation", Organic Reactions, vol. 15, chapter 2, at pp. 210 and 249, (1967-Wiley Publ.).
Fieser, Louis F. et al., "The Condensation of Nitrophenylnitromethanes With Formaldehyde", J. Am. Chem. Soc., 68 2248-9, (1946).
Hafner, von Klaus et al., "_Synthesen und Reaktionen von Fulven Aldehyden", Annalen der Chemie vol. 661 (1963), 52-75.
Hann, Archie Cecil Osborn et al., "Condensation of Aldehydes With Menthyl Acetoacetate", J. Chem. Soc. 85 (1904), pp. 46-56.
Worrall, David E., "The Knoevenagel Reaction and the Synthesis of Unsaturated Nitro Compounds", J. Am. Chem. Soc. 56 (1934), pp. 1556-1558.
Naslund, Gunnel et al., "Eine neue Methode zur Darstellung von 1-Methylzyklohexe-1-on-3 und verwandten Verbindung", Acta Chem. Scand., 16 (1962), No. 6, pp. 1329-1336.

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