The results described herein demonstrate how the very mild reaction conditions of the Co(I)-catalyzed photochemical [2 + 2 + 2] cyclocotrimerization are suited to prepare chiral compounds containing unsubstituted and polysubstituted 2-pyridyl moieties starting from chiral nitriles without any detectable loss of enantiomerical purity. This further increases the already very broad synthetic scope of
A Convenient Dehydration Procedure for the Synthesis of Enantiomerically Pure Cyanohydrins
作者:Fabrice Aquino、Horst Pauling、Willy Walther、Dietmar A. Plattner、Werner Bonrath
DOI:10.1055/s-2000-6403
日期:——
Starting from protected α-hydroxy amides, cyanohydrins (α-hydroxy nitriles) are obtained through dehydration by cyanuric chloride/DMF in excellent yield. The advantages of the procedure are the extremely mild reaction conditions that prevent racemization.