Enantioenriched calcium-(R)-5,5′,6,6′,7,7′,8,8′- octahydro-BINOL (H8-BINOL): An efficient catalyst for the creation of a quaternary stereocenter

Advanced Synthesis and Catalysis

Volumn 347, Issue 6, 2005, Pages 867-871

  Kumaraswamy, G ^a   Jena, Nivedita ^a   Sastry, M N V ^a   Padmaja, M ^a   Markondaiah, B ^a  

^a INDIAN INSTITUTE OF CHEMICAL TECHNOLOGY   (India)

Author keywords

(R) octahydro BINOL (H 8 BINOL); Calcium chloride; Michael reaction; Quaternary stereocenter

Indexed keywords

CALCIUM CHLORIDE; CALCIUM DERIVATIVE; NAPHTHALENE DERIVATIVE;

CATALYSIS; CATALYST; ENANTIOSELECTIVITY; PRODUCTIVITY; QUANTUM YIELD; REVIEW; STEREOCHEMISTRY;

EID: 20044387428     PISSN: 16154150     EISSN: None     Source Type: Journal    
DOI: 10.1002/adsc.200404349     Document Type: Review

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28. 8-BINOL) catalyst forms the cyclic oligomer which in turn dissociates into the monomeric form by the activation of the β-keto ester. The same results were obtained with the unsubstituted BINOL calcium catalyst. Presently, efforts are in progress for the further characterization of the catalyst.
29. 8-BINOL) was also eluted through column chromatography and its optical purity was found to be 99%.