反应详情

A suspension of 8-ethoxycarbonylmethylidene-1,4-dioxaspiro[4.5]decane (crude, 172.9 g) 10% Pd—C (53.2% wet, 6.5 g) in EtOAc/MeOH (1250 mL and 400 mL) is stirred under H2 atmosphere at room temperature for 4 hours. The reaction mixture is filtered, and the filtrate is concentrated in vacuo to afford crude 8-ethoxycarbonylmethyl-1,4-dioxaspiro[4.5]decane. The crude product is used without further purification.

1. filtrationThe reaction mixture is filtered
2. concentrationthe filtrate is concentrated in vacuo