C - Chemistry – Metallurgy – 07 – D
Patent
C - Chemistry, Metallurgy
07
D
C07D 307/33 (2006.01)
Patent
CA 2317043
A process for producing 3-hydroxy-.gamma.-butyrolactone derivatives represented by general formula (1), characterized by treating 3-hydroxy- .gamma.-butyrolactone with a metal salt of hexamethyldisilazone, followed by the reaction with an electrophilic reagient such as an alkylating agent in the presence of, if necessary, a reaction accelerator, wherein R represents C1-C6 alkyl, three- to six- membered cycloalkyl, aralkyl, 2-alkenyl, acyl, .alpha.- hydroxyalkyl, alkoxycarbonylalkyl, or alkoxycarbonyl.
Procédé de production de dérivés de 3-hydroxy-.gamma.-butyrolactone de formule générale (1), dans laquelle R représente un alkyle en C¿1?-C¿6?, un cycloalkyle à trois à six chaînons, un aralkyle, 2-alcényle, acyle, .alpha.-hydroxyalkyle, alcoxycarbonylalkyle ou alcoxycarbonyle, caractérisé en ce qu'on traite une 3-hydroxy-.gamma.-butyrolactone avec un sel métallique d'hexaméthyldisilazone et en ce qu'on effectue ensuite la réaction avec un réactif électrophile, tel qu'un agent d'alkylation, éventuellement en présence d'un accélérateur de réaction.
Furukawa Yoshiro
Hinoue Kazumasa
Katsumura Shigeo
Takehira Yoshikazu
Daiso Co. Ltd.
Kirby Eades Gale Baker
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