Reichert

K.L. Feisle, D. Stegemam, S. Reimche, C. Reichert - IKPH, Uni. of Hannover, Germany. R. T. Lopes - COPPE, Brazil. 

Basu., B., Date, A.W. Int. J. Heat Mass Transfer, 33 (1990) Nr. 6, S.l 149 Haferkamp, H., Gerken, J., Stegemann, D., Reichert, Ch. In-situ Untersuchung des Hartstofftransports beim Laserstrahl-Dispergieren mittels Hochgeschwindigkeits-Radioskopie, Metall, Nr. 3/96... 

Manufactured by C. Reichert Akt., Wien zvii, Austria. It is available from Shandon Scientific Company, 6 Connaught Place, London, S.W. 7. 

There also exists an acidregioselective condensation of the aldol type, namely the Mannich reaction (B. Reichert, 1959 H. Hellmann, 1960 see also p. 291f.). The condensation of secondary amines with aldehydes yields Immonium salts, which react with ketones to give 3-amino ketones (=Mannich bases). Ketones with two enolizable CHj-groupings may form 1,5-diamino-3-pentanones, but monosubstitution products can always be obtained in high yield. Unsymmetrical ketones react preferentially at the most highly substituted carbon atom. Sterical hindrance can reverse this regioselectivity. Thermal elimination of amines leads to the a,)3-unsaturated ketone. Another efficient pathway to vinyl ketones starts with the addition of terminal alkynes to immonium salts. On mercury(ll) catalyzed hydration the product is converted to the Mannich base (H. Smith, 1964). 

Reichert, B. 1959, Die Mcmnich-Reaktion, Springer Berlin Heidelberg New York... 

Rehm-Weller equation Reichert cone Reich process Reichstein approach... 

Reichert cone 60-90 ubeach sands, coal, iron ore, trace heavy minerals... 

Fig. 12. Gravity flow concentrators (a) Reichert cone (2), and (b) spiral, where (o) represent particles of low density and ( ), particles of high density (27).

K. H. Reichert and R. Michael, "Polymerization iu Bubble Columns, Problems of Mass and Heat Transfer at High SoHd Contents," Inst. Chem. 

K. H. Reichert and W. Geiseler, eds., PolymerPeaction Engineering, Hanser Pubhshers, Munich, 1983. 

By passing acetylene into alcohol containing sulfuric acid and mercuric sulfate. Reichert, Bailey and Nieuw-LAND, J. Am. Chem. Soc. 45, 1552 (1923). 

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