Ethyl 4-(1,4-dioxaspiro[4.5]dec-7-en-8-yl)benzoate → Ethyl 4-(1,4-dioxaspiro[4.5]dec-8-yl)benzoate

Beteiligte Stoffe

Reaktionsschritte

A solution of the title compound from Example 10 Step A (907 mg, 3.15 mmol) in EtOAc was degassed via nitrogen sparge. Platinum(IV) oxide (225 mgs, 0.991 mmol) was then added. The reaction flask was fitted with a 3-way adapter equipped with a hydrogen balloon. After 3 vacuum/hydrogen cycles, the reaction mixture was placed under a hydrogen atmosphere. After 1 h, the reaction mixture was filtered through a pad of Celite, rinsing with EtOAc, and concentrated in vacuo. The unpurified product was used in the subsequent step: LCMS m/z 291.0 [M+H]+.

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