Ni-Catalyzed Homoallylation of Polyhydroxy N,O-Acetals with Conjugated Dienes Promoted by Triethylborane
作者:Takamichi Mori、Yusuke Akioka、Gen Onodera、Masanari Kimura
DOI:10.3390/molecules19079288
日期:——
In the presence of Ni-catalyst and triethylborane, N,O-acetals prepared from glycolaldehyde and glyceraldehyde with primary amines in situ underwent homoallylation with conjugated dienes to provide 2-amino-5-hexenols in high regio- and stereoselectivity. Under similar reaction conditions, N,O-acetals from carbohydrates with primary amines provided the corresponding polyhydroxy-bishomoallylamines in good to reasonable yields.
在镍催化剂和三乙基硼的存在下,由乙醇醛和甘油醛与一级胺原位制备的N,O-缩醛,在共轭二烯的作用下发生同烯丙基化反应,高区域选择性和立体选择性地生成2-氨基-5-己烯醇。在类似的反应条件下,碳水化合物与一级胺生成的N,O-缩醛提供了相应的多羟基双同烯丙基胺,产率良好至合理。