Highly Stereoselective Diels–Alder Reactions Catalyzed by Diboronate Complexes**
作者:Yuan‐He Li、Su‐Lei Zhang、Yong Lu、Bo Xiao、Tian‐Yu Sun、Qian‐Qian Xu、Jia‐Hua Chen、Zhen Yang
DOI:10.1002/anie.202303075
日期:2023.8.14
diboronates (BPDB) is reported. Under Lewis acid activation, they can catalyze highly exo-selective and enantioselective Diels–Alderreactions. For diactivated dienophiles, BPDB can also selectively activate one of the two carbonyl groups based on steric effect, resulting in highly regioselective asymmetric Diels–Alderreactions.
A highly efficient enantioselective Nitroso Diels-Alderreactions of 6-methyl-2-nitroso pyridine with various 1,3-dienes were successfully developed with Cu(I)/(S)-TF-BiphamPhos complex as the catalyst. For most of the cyclic dienes, the synthetically...