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O-Hydroxyaryl phosphine oxides

Scheme 45 Synthesis of diastereomerically pure o-hydroxyaryl phosphine oxides 162a and 162b... Scheme 45 Synthesis of diastereomerically pure o-hydroxyaryl phosphine oxides 162a and 162b...
Directed lithiations. Arylboronic acids containing an o-carboxyl group are prepared from the corresponding neopentyl esters via directed lithiation and boration. Chiral o-hydroxyaryl phosphine oxides which are potential chiral ligands are obtained from a... [Pg.218]

The first P-chiral hydroxy phosphoryl compounds that were enzymatically resolved into enantiomers were o-hydroxyaryl phosphines and their oxides 75. The resolution was achieved via enzyme-assisted hydrolysis of their O-acetyl derivatives 74, the most effective enzymes being CE and Upase from C. rugosa (CRL) (Equation 35). The highest enanfioselectivity was observed in the case of naphthyl derivatives (Equation 36), having a P=0 moiety. ... [Pg.186]

See other pages where O-Hydroxyaryl phosphine oxides is mentioned: [Pg.127]    [Pg.92]    [Pg.127]    [Pg.92]    [Pg.563]   
See also in sourсe #XX -- [ Pg.128 ]



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