Stereochemistry of Phosphite Addition to Azomethine Bond of Achiral 2,6-Pyridinedicarbaldimines and Isophthalaldimines—A Comparative Study
摘要:
The addition of dialkyl H-phosphonates to isophthalaldimines 1a-d and pyridine-2,6-dicarboxaldimines 2a-d was investigated and led to the corresponding aminophosphonates. Diastereoselectivity of the addition to pyridine-2,6-dicarboxaldimines was lower than to isophthalaldimines. In contrast, addition of bis(trimethylsilyl) H-phosphonate to both groups of aldimines demonstrated that the diastereoselectivity in case of pyridine-2,6-dicarboxaldimines is comparable or even better than that for the isophthalic derivatives.
in many biologically active natural products and pharmacologically relevant therapeutic agents. A new series of bistetrahydroquinolines (bis-THQs) was synthesized using imino Diels-Alder reactions between dialdehydes, anilines and N-vinyl-2-pyrrolidone (NVP). The notable features of this procedure are mild reaction conditions, greater selectivity and good yields of products. In addition, the inhibitory
Dimerization of proteins/receptors plays a critical role in various cellular processes, including cell proliferation and differentiation. Therefore, targeting such dimeric proteins/receptors by dimeric small molecules could be a potential therapeutic approach to treating various diseases, including inflammation‐associated diseases like cancer. A novel series of bis‐imidazoles (13–18) and bis‐imidazo[1,2‐a]pyridines
Stereochemistry of Phosphite Addition to Azomethine Bond of Achiral 2,6-Pyridinedicarbaldimines and Isophthalaldimines—A Comparative Study
作者:Jarosław Lewkowski、Marek Dzięgielewski
DOI:10.1080/10426507.2012.718298
日期:2013.8.1
The addition of dialkyl H-phosphonates to isophthalaldimines 1a-d and pyridine-2,6-dicarboxaldimines 2a-d was investigated and led to the corresponding aminophosphonates. Diastereoselectivity of the addition to pyridine-2,6-dicarboxaldimines was lower than to isophthalaldimines. In contrast, addition of bis(trimethylsilyl) H-phosphonate to both groups of aldimines demonstrated that the diastereoselectivity in case of pyridine-2,6-dicarboxaldimines is comparable or even better than that for the isophthalic derivatives.