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Papers by David Fenwick

Research paper thumbnail of Peer Review Report on Compliance with the Code of Practice and the Coordination Role of the NSI: Germany

Research paper thumbnail of Handbook on residential property prices indices (RPPIs)

Research paper thumbnail of Discovery of a small molecule inhibitor through interference with the gp120�CD4 interaction

Bioorganic Medicinal Chemistry Letters, Jul 1, 2009

Research paper thumbnail of Presence or absence of a nonlinear effect according to the asymmetric catalyst preparation in the alkylation of benzaldehyde

Comptes Rendus Chimie, 2002

The addition of Et2Zn on benzaldehyde in the presence of a stoichiometric amount of Ti(Oi-Pr)4 ca... more The addition of Et2Zn on benzaldehyde in the presence of a stoichiometric amount of Ti(Oi-Pr)4 catalysed by (1R,2R)-bis(trifluoromethanesulfonamido)-cyclohexane 1a has been revisited. A nonlinear effect was present or absent, depending on the catalyst preparation. An asymmetric amplification has been observed when Ti(Oi-Pr)4 was added to 1a followed by Et2Zn and then benzaldehyde (Ohno procedure). In the alternate procedure (Walsh), where

Research paper thumbnail of Recommendations

Handbook on Residential Property Price Indices, 2013

Research paper thumbnail of Kinetic Resolution When the Chiral Auxiliary Is Not Enantiomerically Pure:  Normal and Abnormal Behavior

Journal of the American Chemical Society, 1999

ABSTRACT Kinetic resolutions with enantioimpure chiral auxiliaries (reagents or catalysts) are co... more ABSTRACT Kinetic resolutions with enantioimpure chiral auxiliaries (reagents or catalysts) are considered, and a kinetic treatment for various rate laws is described. A useful parameter, the apparent stereoselectivity factor, is defined and correlated to the enantiomeric excess of the chiral auxiliary. Deviations from the regular laws are possible (asymmetric amplification or depletion). These anomalies have their origins in the same phenomena that cause nonlinear effects in enantioselective catalysis. Asymmetric amplifications have been experimentally observed.

Research paper thumbnail of Discovery of a small molecule inhibitor through interference with the gp120–CD4 interaction

Bioorganic & Medicinal Chemistry Letters, 2009

Research paper thumbnail of The ICP Bulletin Vol. 5 (No. 1)

International Comparison Program Update, Mar 1, 2008

Research paper thumbnail of Peer Review Report on Compliance with the Code of Practice and the Coordination Role of the NSI: Germany

Research paper thumbnail of Handbook on residential property prices indices (RPPIs)

Research paper thumbnail of Discovery of a small molecule inhibitor through interference with the gp120�CD4 interaction

Bioorganic Medicinal Chemistry Letters, Jul 1, 2009

Research paper thumbnail of Presence or absence of a nonlinear effect according to the asymmetric catalyst preparation in the alkylation of benzaldehyde

Comptes Rendus Chimie, 2002

The addition of Et2Zn on benzaldehyde in the presence of a stoichiometric amount of Ti(Oi-Pr)4 ca... more The addition of Et2Zn on benzaldehyde in the presence of a stoichiometric amount of Ti(Oi-Pr)4 catalysed by (1R,2R)-bis(trifluoromethanesulfonamido)-cyclohexane 1a has been revisited. A nonlinear effect was present or absent, depending on the catalyst preparation. An asymmetric amplification has been observed when Ti(Oi-Pr)4 was added to 1a followed by Et2Zn and then benzaldehyde (Ohno procedure). In the alternate procedure (Walsh), where

Research paper thumbnail of Recommendations

Handbook on Residential Property Price Indices, 2013

Research paper thumbnail of Kinetic Resolution When the Chiral Auxiliary Is Not Enantiomerically Pure:  Normal and Abnormal Behavior

Journal of the American Chemical Society, 1999

ABSTRACT Kinetic resolutions with enantioimpure chiral auxiliaries (reagents or catalysts) are co... more ABSTRACT Kinetic resolutions with enantioimpure chiral auxiliaries (reagents or catalysts) are considered, and a kinetic treatment for various rate laws is described. A useful parameter, the apparent stereoselectivity factor, is defined and correlated to the enantiomeric excess of the chiral auxiliary. Deviations from the regular laws are possible (asymmetric amplification or depletion). These anomalies have their origins in the same phenomena that cause nonlinear effects in enantioselective catalysis. Asymmetric amplifications have been experimentally observed.

Research paper thumbnail of Discovery of a small molecule inhibitor through interference with the gp120–CD4 interaction

Bioorganic & Medicinal Chemistry Letters, 2009

Research paper thumbnail of The ICP Bulletin Vol. 5 (No. 1)

International Comparison Program Update, Mar 1, 2008

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