Direct construction of a quaternary carbon center utilizing an organosamarium reagent
作者:Zhifang Li、Yongmin Zhang
DOI:10.1016/s0040-4039(01)01831-7
日期:2001.11
Direct geminal diallylation of lactams and acyclic amides containing an NH bond has been achieved in the presence of allylsamarium bromide. By applying this method, quaternary carbons have been constructed, and 2,2-diallylatednitrogenheterocycles and diallylated amides were synthesized in moderate to good yields under mild conditions.
Direct construction of quaternary carbon center utilizing an allylsamarium bromide reagent
作者:Zhifang Li、Yongmin Zhang
DOI:10.1016/s0040-4020(02)00491-x
日期:2002.6
Direct geminal diallylation of lactones, lactams and acyclic amides containing a N–H bond has been achieved in the presence of allylsamarium bromide. By applying this method, quaternary carbons have been constructed, and 2,2-diallylated cyclic ethers, 2,2-diallylatednitrogenheterocycles and diallylated amides were synthesized in moderate to good yields under mild conditions.
Diaminophosphine Oxide Ligand Enabled Asymmetric Nickel-Catalyzed Hydrocarbamoylations of Alkenes
作者:Pavel A. Donets、Nicolai Cramer
DOI:10.1021/ja406730t
日期:2013.8.14
Chiral trivalent phosphorus species are the dominant class of ligands and the key controlling element in asymmetric homogeneous transition-metalcatalysis. Here, novel chiral diaminophosphine oxide ligands are described. The arising catalyst system with nickel(0) and trimethylaluminum efficiently activates formamide C-H bonds under mild conditions providing pyrrolidones via intramolecular hydrocarbamoylation
Lactams containing an N-H bond are smoothly transformed into 2,2-diallylatednitrogenheterocycles on heating with allylic boranes in THF followed by deboronation
在THF中与烯丙基硼烷一起加热,然后将含NH键的内酰胺平滑转化为2,2-二烯丙基化的氮杂环
Raucher, Stanley; Jones, David S., Synthetic Communications, 1985, vol. 15, # 11, p. 1025 - 1032