Dibenzo[de,g]quinolines 5were formed by the palladium-catalysed heteroannulation of disubstituted alkynes and 1-iodo-10-(dimethylamino)phenanthrene (3c). Symmetric alkynes led to high levels of regioselectivity. These reactions constitute a new synthesis of the B-ring system of aporphine heterocycles.
二苯并[de,g]喹啉5由钯催化的双取代炔烃和1-碘-10-(二甲氨基)菲(3c)的杂环化形成。对称炔烃导致高水平的区域选择性。这些反应构成了阿朴啡杂环 B 环系统的新合成。
A Convenient Synthesis of Alkyl- and Dialkylphenanthren-9-ylamines
A variety of alkyl- and dialkylphenanthren-9-ylamines 1 and 2 have been prepared by radical-mediated cyclizations of the corresponding diaryleneamines 3 issued from Horner reactions between appropriate phosphorylated dibenzylamines 4 and halogenoarylaldehydes 5.
Chromatographic materials for the separation of unsaturated molecules
申请人:Waters Technologies Corporation
公开号:US10092894B2
公开(公告)日:2018-10-09
The present disclosure relates to a method of separating a compound of interest, particularly unsaturated compound(s) of interest, from a mixture. The compound is separated using a column having a chromatographic stationary phase material for various different modes of chromatography containing a first substituent and a second substituent. The first substituent minimizes compound retention variation over time under chromatographic conditions. The second substituent chromatographically and selectively retains the compound by incorporating one or more aromatic, polyaromatic, heterocyclic aromatic, or polyheterocyclic aromatic hydrocarbon groups, each group being optionally substituted with an aliphatic group.