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503538-70-3

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Atropisomeric Biarylbisphosphines Derived from 2,2-Difluoro-1,3- benzodioxole
Starting from the inexpensive 2,2-difluoro-1,3-benzodioxole or its 5-bromo derivative, two new atropisomeric bisphosphines have been prepared which, after racemate resolution, exhibit attractive features as ligands for enantioselective catalysts. The key step in their synthesis is a low temperature Ullmann reaction. An improved protocol secures coupling yields of 70-80%.
Leroux, Frederic,Gorecka, Joanna,Schlosser, Manfred
p. 326 - 328
(2007/10/03)

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Chemical Properties

Boiling Point: 670.9±55.0 °C(Predicted)
Sensitive: air sensitive
PSA: 64.10000
LogP: 7.51300

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