New Synthesis of Vaulted Biaryl Ligands via the Snieckus Phenol Synthesis
摘要:
In an effort to develop a synthesis of the VAPOL ligand that avoids the use of a chromium carbene complex, a route vias examined that involved the annulation of a naphthalene carboxamide via the method of Snieckus. The latter derivatives could be converted in a two-step sequence to 2-phenyl-4-phenanthrols in 6D-72% overall yields. The utility of this method for the synthesis of VAPOL derivatives is demonstrated in the synthesis of (S)-7,7'-dimethyl-VAPOL.
New Synthesis of Vaulted Biaryl Ligands via the Snieckus Phenol Synthesis
摘要:
In an effort to develop a synthesis of the VAPOL ligand that avoids the use of a chromium carbene complex, a route vias examined that involved the annulation of a naphthalene carboxamide via the method of Snieckus. The latter derivatives could be converted in a two-step sequence to 2-phenyl-4-phenanthrols in 6D-72% overall yields. The utility of this method for the synthesis of VAPOL derivatives is demonstrated in the synthesis of (S)-7,7'-dimethyl-VAPOL.
[EN] SYNTHESIS OF VAPOL LIGANDS<br/>[FR] SYNTHESE DE LIGANDS VAPOL
申请人:ARCH DEV CORP
公开号:WO2000056691A1
公开(公告)日:2000-09-28
The present invention relates to a process for making the chiral ligand 2,2'-diphenyl-[3,3'-biphenanthrene]-4,4'-diol, also known as VAPOL, as well as other novel chiral ligands.
New Synthesis of Vaulted Biaryl Ligands via the Snieckus Phenol Synthesis
作者:Su Yu、Constantinos Rabalakos、William D. Mitchell、William D. Wulff
DOI:10.1021/ol047852e
日期:2005.2.1
In an effort to develop a synthesis of the VAPOL ligand that avoids the use of a chromium carbene complex, a route vias examined that involved the annulation of a naphthalene carboxamide via the method of Snieckus. The latter derivatives could be converted in a two-step sequence to 2-phenyl-4-phenanthrols in 6D-72% overall yields. The utility of this method for the synthesis of VAPOL derivatives is demonstrated in the synthesis of (S)-7,7'-dimethyl-VAPOL.