New Chiral Cyclooctatriene-Based Polycyclic Architectures
摘要:
The synthesis and properties of new chiral polycycllic. architectures that display both helicity and a saddle-type shape are described. The enantiomers have been separated, and their absolute configuration was determined by VCD and ECD. The unprecedented molecular architecture is based on a cyclooctatriene core surrounded by an association of benzo[c]fluorene and ortho-phenylene units.
New Chiral Cyclooctatriene-Based Polycyclic Architectures
摘要:
The synthesis and properties of new chiral polycycllic. architectures that display both helicity and a saddle-type shape are described. The enantiomers have been separated, and their absolute configuration was determined by VCD and ECD. The unprecedented molecular architecture is based on a cyclooctatriene core surrounded by an association of benzo[c]fluorene and ortho-phenylene units.
The first synthesis of 6,11-diamino-[6]carbohelicenes is described: the short 5 step sequence involves Suzuki–Miyaura coupling, functional group transformations and electrophilic aromatic cyclisation; the original strategy allows the preparation of di- and tetra-substituted helicenes in comfortable yields.
New Chiral Cyclooctatriene-Based Polycyclic Architectures
作者:Grégory Pieters、Anne Gaucher、Jérôme Marrot、François Maurel、Jean-Valère Naubron、Marion Jean、Nicolas Vanthuyne、Jeanne Crassous、Damien Prim
DOI:10.1021/ol201804h
日期:2011.8.19
The synthesis and properties of new chiral polycycllic. architectures that display both helicity and a saddle-type shape are described. The enantiomers have been separated, and their absolute configuration was determined by VCD and ECD. The unprecedented molecular architecture is based on a cyclooctatriene core surrounded by an association of benzo[c]fluorene and ortho-phenylene units.