Organic compounds -- part of the class 532-570 series – Organic compounds – Carboxylic acid esters
Reexamination Certificate
2007-02-06
2007-02-06
Barts, Samuel A (Department: 1621)
Organic compounds -- part of the class 532-570 series
Organic compounds
Carboxylic acid esters
Reexamination Certificate
active
10539785
ABSTRACT:
The compounds represented by the formula (I) are produced by reacting benzene compound of the formula (IV) or (V) with alkenylidene diacetate of the formula (VI) in the presence of a catalyst comprising one or more members selected from (a) halogenated boron compounds,(b) triflate compounds of Group 11 elements,(c) halogenated compounds of Group 12 elements, and(d) triflate and halogenated compounds of tin and atomic numbers 58 and 66 to 71 elements.R1, R2=H or C1–C10 alkyl groupA=Substituted phenyl group corresponding to a compound of formula (IV) or (V),R3, R4=H or C1–C4 alkyl group, m=0 or 1–4, n=1 to 5, k=1 or 2.
REFERENCES:
patent: 3023247 (1962-02-01), Scriabine
patent: 4389527 (1983-06-01), Valentine et al.
patent: 55-141437 (1980-11-01), None
Igor Scriabine, No. 185 Nouveau procede de preparation des aldehydes dihydrocinnamiques, Bulletin de la Societe chimique de France, Jun. 1961, pp. 1194-1198.
David A Evans, J. Stephen Clark, Rainer Metternich, Vance J. Novack, and George S. Sheppard Diastereoselective Aldol Reactions Using beta keto Imide Derived Enolates. A Versatile Approach to the Assemblage of Polypropionate Systems J. Am. Chem. Soc. 1990, 112, 866-868.
Igor Scriadine New Method for Preparation of Dihydrocinnamaldehydes Bull Soc Chim de France, Section 6, Jun. 1961 pp. 1194-1198 (Traslation provided).
Igor Scriabine,No. 185.-Nouveau procédé de préparation des aldéhydes dihydrocinnamiques, Bulletin de la Société chimique de France, Jun. 1961, pp. 1194-1198.
Sadaike Shinichiro
Shirai Masashi
Yoshida Yoshihiro
Barts Samuel A
DLA Piper (US) LLP
Nagubandi Lalitha
Ube Industries Ltd.
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