Science Foundation (DFG). The authors thank Leonhard Knorr-Held and the two referees for valuable comments. 1

Bibliographie: Knorr, Dagmar: Promovieren als handlungsorientiertes Projekt. Das Kaskadenmodell wissenschaftlicher Textproduktion, Exposé – Zeitschrift für wissenschaftliches Schreiben und Publizieren, 1-2021, S. 14-17. https://doi.org/10.3224/expose.v2i1.05

Cadmium carbonate was found to be a useful promoter in the Koenigs-Knorr synthesis of 2-(4-methoxybenzyl)cyclohexyl-beta-D-glycopyranosides. Using this promoter model glucoside and galactoside derivatives of cyclic (i.e., secondary) alcohols were synthesized in 50-60 % overall yields. Diastereoisomeric mixtures of products were obtained in these syntheses, which started from racemic isomers of ...

Kinetic data for the Knorr pyrazole synthesis were acquired using transient flow methods, including a novel reactant stoichiometry ramping method, providing new insights into mechanism, autocatalysis and an unexpected intermediate.

Ever since Lotka (1926) published his inverse square law of scientific productivity, both the nature and origin of the phenomenon have been investigated in the literature. Although the specific parameters of those functions which indicate what proportion of scientists produces what bulk of scientific products vary with different indices (Davis, 1941; Leavens, 1953; Price, 1963; Britton, 1964; A...

J. David Singer is Professor of Political Science at the University of Michigan. A pioneer in the effort to render the study of international politics more scientific, his many important works include authorship of Deterrence, Arms Control, and Disarmament (1962) and editorship of Human Behavior and International Politics (1965) and Quantitative International Politics (1968). As can be seen in ...

BACKGROUND The Birch reduction of electron rich pyrroles does not occur readily. However, dissolving metal reduction with zinc under acidic conditions gives 3-pyrrolines (2,5-dihydropyrroles) in reasonable yield. This dissolving metal reduction was first reported by Knorr and Rabe in 1901 but since then has only been reported for the reduction of electron rich pyrroles. RESULTS The partial re...