Reactions of Amines and Hydrazides derived from L-Proline with Dialkyl Dicyanofumarates
作者:Heinz Heimgartner、Grzegorz Mlostoń、Adam M. Pieczonka、Aneta Wróblewska、Anthony Linden
DOI:10.3987/com-12-s(n)16
日期:——
The reaction of prolinamine derivatives (8a,b) and dialkyldicyanofumarates (1) in dichloromethane at room temperature leads to the optically active enamines (10). Whereas products (10) in the case of 1-benzyl prolinamine (8a) are stable compounds, the corresponding enamines obtained from the non-protected prolinamine (8b) smoothly undergo a cyclocondensation at room temperature to give perhydropyrrolo[1