Synthesis of α-hydroxy-γ-butyrolactones from acrylates and 1,3-dioxolanes using N-hydroxyphthalimide (NHPI) as a key catalyst
摘要:
A new route to alpha-hydroxy-gamma-butyrolactones through three-component radical coupling of 1,3-dioxoranes, acrylates, and molecular oxygen using N-hydroxyphthalimide (NHPI) as a key catalyst has been developed. For example, the addition of 1,3dioxarane to methyl acrylate under dioxygen by NHPI followed by catalytic hydrogenation of the resulting adduct on Pd/C afforded alpha-hydroxy-gamma-butyrolactone in good yield. This method provides a facile approach to alpha-hydroxy-gamma-butyrolactones, which are difficult to synthesize by conventional methods. (c) 2005 Elsevier Ltd. All rights reserved.
Fructose 1,6-Bisphosphate Aldolase fromStaphylococcus carnosus: Overexpression, Structure Prediction, Stereoselectivity, and Application in the Synthesis of Bicyclic Sugars