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Diastereoselective radical cyclization of bromoacetals (Ueno-Stork reaction) controlled by the acetal center

Diastereoselective radical cyclization of bromoacetals (Ueno-Stork reaction) controlled by the acetal center,10.1016/S0040-4039(98)01971-6,Tetrahedron

Diastereoselective radical cyclization of bromoacetals (Ueno-Stork reaction) controlled by the acetal center   (Citations: 2)
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The stereochemistry of the 5-exo-trig cyclization of bromoacetals (Ueno-Stork cyclization) can be controlled from the stereogenic acetal center. High stereoselectivities have been observed for the formation of 4-substituted tetrahydrofurans. Preparation of an optically pure β-substituted γ-butyrolactone by use of an easily removable chiral auxiliary is reported.
Journal: Tetrahedron Letters - TETRAHEDRON LETT , vol. 39, no. 47, pp. 8655-8658, 1998
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