Pfeifer

P. Pfeifer, in Preparative Chemistry Using Supported Reagents, P. Laszlo, ed.. Academic, New York, 1987. 

Karger J, Pfeifer FI and Fleink W 1988 Prinoiples and applioation of self-diffusion measurements by nuolear magnetio resonanoe Adv. Magn. Res. 12 1-89... 

Leucrose, 6-0-(a-D-glucopyranosyl)-P-D-fmctopyranose [7158-70-5] is synthesized from sucrose usiag a dextranase enzyme from l euconostoc mesenteriodes and a small proportion of fmctose (2%). Pfeifer Langen of Germany have developed a production process for leucrose that iavolves extraction of the enzyme, treatment with 65% aqueous solution of sucrose and fmctose (1 2 wt/wt) at 25°C, separation of the product from fmctose by ion-exchange column chromatography, and crystallization. The product has not yet been launched on the market as of this writing (1996). 

D. W. Pfeifer and M. J. Scab, Concrete Sealersfor Protection of Bridge National Cooperative Highway Research Program Report 244,... 

Proceedings ofthe 10th International Zeolite Conference, Garmisch-Partenkirchen, Germany, July 17-22,1994 edited by J. Weitkamp, H.G. Karge, H. Pfeifer and W. Holderich Volume 85 Advanced Zeolite Science and Applications... 

In the case of sympathicomimetics it should be checked whether the reaction in solution (Pfeifer, S., Manns, O. Pharmazie 1957, 12, 401-408) is applicable to TLC. 

Since dihydrothebainone is also formed by hydrogenation of thebainone (Schopf and Hirsch i), and as Schopf and Pfeifer have shown that 1 5-dibromodihydrothebainone, on treatment with alkali, is converted into. 1-bromodihydrocodeinone by formation-of the C -C oxygen bridge, and this, on catalytic hydrogenation, yields dihydrocodeinone (LIII, p. 246), the constitution of which has been demonstrated by Schopf (p. 244), there can be little doubt that dihydrothebainone is represented by (LI). Schopf and Winterhalder have also isolated as an oxime (m.p. 228°, [a] °° — 115-8°) an e.pidihydrothebainone, which is regarded as the epimeride of dihydrothebainone. 

Pfeifer A, Verma IM (2001) Gene therapy promises and problems. Annu Rev Genomics Hum Genet 2 177-211... 

Pfeifer, Turbulent Wake Gas Analyzer Program , Rept No ESD-TR-69-152, Contract AF19(628)-5167, ARPA order-600, MIT, Lexington (1969) 30) H.R. Griem R.H. 

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