Atropisomerization of Biaryl Cr(CO)3 Complexes: Preparation of Both Atropisomers of Biaryls

Synlett

Volumn 1995, Issue 10, 1995, Pages 1040-1042

  Kamikawa, Ken ^a   Watanabe, Takashi ^a   Uemura, Motokazu ^a  

^a Osaka Prefecture University   (Japan)

Author keywords

(arene)chromium complex; axial chirality; axial isomerization; chiral biaryl; planar chirality

Indexed keywords

EID: 0343001203     PISSN: 09365214     EISSN: 14372096     Source Type: Journal    
DOI: 10.1055/s-1995-5181     Document Type: Article

References (15)

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6. The first symbol indicates a configuration of the planar chirality at the biphenyl linkage position of the chromium complexed arene ring and the second one shows the axial chirality. The indicates a racemate but only one enantiomer is shown for clarity
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15. Optical purity of both enantiomers 14 and 16 was determined by HPLC with Ceramospher RU-1 (Shiseido Ltd.) eluted with methanol; flow rate 0.5 mL/min; column temperature 40 °C; UV detector 254 nm. Retention time; 18.98 min for 14, 16.76 min for 16.