Synthesis of new chiral auxiliaries for 6π-azaelectrocyclization: 4- and 7-alkyl substituted cis-1-amino-2-indanols
作者:Toyoharu Kobayashi、Katsunori Tanaka、Junichi Miwa、Shigeo Katsumura
DOI:10.1016/j.tetasy.2003.10.029
日期:2004.1
of new chiral auxiliaries, 7-alkyl substituted cis-1-amino-2-indanol derivatives, was established by the Diels–Alder reaction of 1-substituted dienes with cyclopentenone followed by the asymmetric epoxidation of the resulting indene derivatives and then the Ritter reaction. These bulky cis-aminoindanol derivatives are very effective as chiral auxiliaries and nitrogen sources in the asymmetric 6π-azaelectrocyclization
通过1-取代的二烯与环戊烯酮的狄尔斯-阿尔德反应,然后对所得的茚衍生物进行不对称环氧化,建立了新的手性助剂,即7-烷基取代的顺式-1-氨基-2-茚满醇衍生物的合成。里特反应。这些大体积的顺式-氨基茚满醇衍生物在不对称6π-氮杂电环化中作为手性助剂和氮源非常有效。还使用类似的方法制备相应的4-烷基衍生物。