Synthesis and Impurity Profiling of a Vital Intermediate in Gabapentin and Bispidine Derivative Pathways by Response Surface Methodology
Ali Afshar,
Masoud Rahimi,
Peyman Salehi
Abstract:Spiro[3, nonane-9,1′-cyclohexane]-2,4,6,8-tetrone ( 8) is an important intermediate that opens up two distinct synthetic pathways for the production of gabapentin and bispidine. This work describes the acidic hydrolysis of 2,4dioxo-3-azaspiro-1,5-dicarbonitrile (7) to obtain (8) and investigates the effect of the most important variables on its yield percentage. Box−Behnken design (BBD) as a subclass of response surface methodology (RSM) was conducted to explore the most suitable operating conditions for maxim… Show more
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