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Regio- and diastereoselective synthesis of lissoclinolide analogues by Lewis acid catalyzed cyclization of the first 1,5-bis(trimethylsilyloxy)-1,3,5-hexatrienes with oxalyl chloride
No full textThe Lewis acid catalyzed cyclization of 1,5-bis(trimethylsilyloxy)-1,3,5-hexatrienes with oxalyl chloride resulted in formation of polyunsaturated butenolides
Chemo-, regio-, and diastereoselective synthesis of functionalized cyclopropanes by cyclization of dilithiated nitriles with epibromohydrin
No full text[GRAPHICS] The cyclization of 1,1-dianions with epibromohydrin results in chemo-, regio-, and diastereoselective formation of functionalized hydroxymethyl cyclopropanes
Regio- and diastereoselective synthesis of lissoclinolide analogues by Lewis acid catalyzed cyclization of the first 1,5-bis(trimethylsilyloxy)-1,3,5-hexatrienes with oxalyl chloride
No full textThe Lewis acid catalyzed cyclization of 1,5-bis(trimethylsilyloxy)-1,3,5-hexatrienes with oxalyl chloride resulted in formation of polyunsaturated butenolides
Efficient synthesis of biaryl lactones by domino retro-Michael-aldol-lactonization reactions
No full textBiaryl lactones were prepared by novel domino retro-Michael-aldol-lactonization reactions of 2,3-dihydropyrans
Domino 'Staudinger-aza-Wittig-1,5-phosphonium-rearrangement-fragmentation' reactions of 1-azido-2-hydroxy-4,6-dioxohexanes
No full textThe domino 'Staudinger-aza-Wittig-1,5-phosphonium-rearrangement-fragmentation' reaction of 1-azido-2-hydroxy-4,6-dioxohexanes allows a convenient synthesis of functionalized 1-acetamido-2-alkylidenecyclopentanes
Chemo-, regio- and stereoselective synthesis of 2-alkylidene-5-hydroxymethyl-hydrofurans by cyclization of 1,3-dicarbonyl-dianions with 1-bromo-2,3-epoxypropanes
No full textReaction of 1,3-dicarbonyl dianions with epibromohydrin derivatives results in chemo-, regio- and stereoselective formation of functionalized 2-alkylidene-5-hydroxymethyl-hydrofurans
Chemo-, regio- and stereoselective synthesis of 2-alkylidene-5-hydroxymethyl-hydrofurans by cyclization of 1,3-dicarbonyl-dianions with 1-bromo-2,3-epoxypropanes
No full textReaction of 1,3-dicarbonyl dianions with epibromohydrin derivatives results in chemo-, regio- and stereoselective formation of functionalized 2-alkylidene-5-hydroxymethyl-hydrofurans
Going 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
Variations on the Author
Full text link“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
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