A facile route for highly enantioenriched six‐membered 1,4‐<i>N,N</i>‐ and <i>N,O</i>‐heterocycles from <scp>L</scp>‐serinate‐derived <scp>α</scp>‐bromoacetates
作者:So Jeong Lee、Min Ji Park、Seyeon Kim、Yong Sun Park
DOI:10.1002/bkcs.12787
日期:2023.12
Preparation of highly enantioenriched six-membered 1,4-N,N- and N,O-heterocycles has been developed through [4 + 2] heteroannulation of α-bromoacetates with 1,4-binucleophiles. Two consecutive substitutions of highly diastereoenriched L-serinate-derived α-bromoacetates provide convenient access to a wide range of C-aryl/aliphatic substituted 1,4-N,N- and N,O-heterocycles with up to 99:1 er.
通过 α-溴乙酸酯与 1,4-双亲核试剂的 [4 + 2] 杂环化,开发了高度对映体富集的六元 1,4- N,N-和N,O-杂环。高度非对映体富集的 L-丝氨酸衍生的 α-溴乙酸酯的两次连续取代可方便地获得各种 C-芳基/脂肪族取代的 1,4- N,N-和N,O-杂环,其比例高达 99:1。