Base-Catalyzed One-Pot Synthesis of Unsymmetrical Fluorenes from Aromatic <i>ortho</i>
-Dialdehydes and 1,3-Dicarbonyl Compounds
作者:Ue Ryung Seo、Young Keun Chung、Chulbom Lee
DOI:10.1002/cctc.201501424
日期:2016.3.18
A synthetic route for the preparation of unsymmetrically polysubstituted fluorenes was developed through the base‐catalyzed one‐pot domino reactions of aromatic ortho‐dialdehydes with 1,3‐dicarbonyl compounds. This protocol provides expeditious access to indene‐fused polycyclic aromatic hydrocarbons such as the benzo[b]fluorene and 13H‐indeno[1,2‐b]anthracene skeletons.
通过芳族邻二醛与1,3-二羰基化合物的碱催化单锅多米诺反应,开发了一种制备不对称多取代芴的合成途径。该协议可快速访问茚并稠合的多环芳烃,例如苯并[ b ]芴和13 H-茚并[1,2-b]蒽骨架。
Development of Asymmetric Deacylative Allylation
作者:Alexander J. Grenning、Christie K. Van Allen、Tapan Maji、Simon B. Lang、Jon A. Tunge
DOI:10.1021/jo400793a
日期:2013.7.19
Herein we present the development of asymmetric deacylative allylation of ketone enolates. The reaction directly couples readily available ketone pronucleophiles with allylic alcohols using facile retro-Claisen cleavage to form reactive intermediates in situ. The simplicity and robustness of the reaction conditions is demonstrated by the preparation of >6 g of an allylated tetralone from commercially available materials. Furthermore, use of nonracemic PHOX ligands allows intermolecular formation of quaternary stereocenters directly from allylic alcohols.