1,721,014 research outputs found
An attempt at understanding the origin of stereoselection in the asymmetric intramolecular Ullmann coupling reaction by CD spectroscopy
No full textA Short and Efficient Route to Enantiopure 2,2’-Bis(bromomethyl)-1,1’-binaphthyl, a Key Intermediate for the Synthesis of Dihydrodinaphthazepinic Chiral Derivatives
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Determinazione della stereochimica assoluta di prodotti naturali complessi attraverso il calcolo ab initio del potere rotatorio
No full textChiral acetylenes as synthetic intermediates. 4. Synthesis and chiroptical properties of optically active a,b-acetylenic ketones
No full textGoing Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Assegnazione della Configurazione Assoluta via calcolo ab inizio della curva di dispersione ottica rotatoria
No full textUn semplice protocollo computazionale per l'assegnamento della configurazione assoluta molecolare
No full textAb initio calculation of the optical rotatory dispersion of (S)-propylene oxide in the gas phase
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