Organic compounds -- part of the class 532-570 series – Organic compounds – Nitriles
Patent
1990-09-20
1992-08-25
Brust, Joseph Paul
Organic compounds -- part of the class 532-570 series
Organic compounds
Nitriles
558421, C07C25310
Patent
active
051420902
ABSTRACT:
The present invention relates to a process for the preparation of 3-cyano-3,5,5'-trimethyl-1-cyclohexanone by means of the reaction of isophorone with an alkaline cyanide. The reaction is performed starting from isophorone and an equivalent amount of cyanide in a homogeneous water/organic solvent solution at a temperature comprised between 20.degree. C. and the reflux temperature, maintaining a pH between 14 and 8 by means of a gradual addition of an inorganic acid during the reaction.
REFERENCES:
patent: 3352913 (1967-11-01), Schmitt et al.
patent: 4299775 (1981-11-01), Dubreux
Lange, "Manuale Di Chimica", (date not available), pp. 368-369; Uses Utet-Sansoni Edizioni Scientifiche Firenze.
Kuster-Thiel, Tabelle Per Le Analisi Chimidre E Chimico-Fisiche, 12th ed, (date not available), p. 138, Ulrico Hoepli Editore Milano.
Parodi Sandro
Pontoglio Enrico
Brust Joseph Paul
Caffaro S.p.A.
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