Tetrahedron Letters p. 2929 - 2932 (1998)
Update date:2022-08-03
Topics:
Martin, Stephen F.
Hillier, Michael C.
Intramolecular cyclopropanations of diastereomeric, secondary allylic diazoacetates were carried out in the presence of an achiral copper catalyst, Cu(TBS)2, and the chiral rhodium catalysts Rh2[5(S)-MEPY]4 and Rh2[5(R)- MEPY]4 to give diastereomeric cyclopropyl lactones in ratios that varied with catalyst and stereochemistry of the starting material.
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