Rupe; Liechtenhan, Chemische Berichte, 1908, vol. 41, p. 1281
作者:Rupe、Liechtenhan
DOI:——
日期:——
Selective Synthesis of Cyclooctanoids by Radical Cyclization of Seven-Membered Lactones: Neutron Diffraction Study of the Stereoselective Deuteration of a Chiral Organosamarium Intermediate
作者:Xavier Just-Baringo、Jemma Clark、Matthias J. Gutmann、David J. Procter
DOI:10.1002/anie.201606792
日期:2016.9.26
the few radical syntheses of cyclooctanes. The process is terminated by the quenching of a chiral benzylic samarium. A labeling experiment and neutron diffraction study have been used for the first time to probe the configuration and highly diastereoselective deuteration of a chiral organosamarium intermediate.
七元内酯经过选择性 SmI2 -H2 O 促进的自由基环化形成取代的环辛醇。这些产物是由环化的外切模式产生的,而不是环辛烷的少数自由基合成中通常采用的内切模式。该过程通过手性苄基钐的猝灭而终止。首次使用标记实验和中子衍射研究来探测手性有机钐中间体的构型和高度非对映选择性氘化。