A nickel(<scp>ii</scp>)-catalyzed asymmetric intramolecular Alder-ene reaction of 1,7-dienes
作者:Wen Liu、Pengfei Zhou、Jiawen Lang、Shunxi Dong、Xiaohua Liu、Xiaoming Feng
DOI:10.1039/c9cc01521c
日期:——
A highly diastereo- and enantioselective intramolecular Alder-ene reaction with an alkene as the enophile has been developed by using a chiral N,N′-dioxide/nickel(II) complex as the catalyst. This protocol provides a facile route towards the synthesis of diverse 3,4-disubstituted chroman, tetrahydroquinoline, piperidine and thiochroman derivatives in high yields with good to excellent diastereo- and
通过使用手性N,N′-二氧化物/镍(II)配合物作为催化剂,开发了与烯作为亲亲物的高度非对映选择性和对映选择性的分子内Alder-ene反应。该方案为合成各种3,4-二取代的苯并二氢吡喃,四氢喹啉,哌啶和硫代苯并二氢吡喃衍生物提供了一条简便的途径,并具有良好的非对映选择性和对映选择性。