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"Hon är fejk" : En kvalitativ studie om hur publiken tolkar Kylie Jenner på Instagram.Isberg, Emma, Selander, Lisa January 2018 (has links)
The purpose of this essay is to find out how the influencer and businesswoman Kylie Jenner is received by the public on her Instagram account compared with how she portray herself. This essay is based on a qualitative research which reaches out to the theories gender, representation, private and public, and the two-step hypothesis. The results are based on answers from six focus groups with a total of 24 participants. The results shows that the informants longs for role models on social media and most of them agree that Kylie Jenner does not live up to the expectations that come from being a role model. The aim of this essay is to identify the characteristics of our informants answers and they have resulted in three main themes; Instagram as social medium, influencers impact on Instagram and Kylie Jenner on Instagram. The informants' views on influencers are seemingly negative because of preconceived opinions regarding the profession which shows at an early stage of the resulting part.
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Chemistry Of Thio And Seleno Metallates In Organic SynthesisSaravanan, V 06 1900 (has links)
Thio metallates are known for many years for their utility in many processes. They have been established as versatile reagents in organic synthesis. However the heavier metal chalcogenides, though known for many years, have been ignored for a long time. In this thesis the results of the development of tetraethylammonium tetraselenotungstate [EttN]2Wse4 1 as a new class of selenium transfer reagent have been described. The thesis also deals with the chemistry of benzyltriethylammonium tetrathiomolybdate, [BnEt3N]2MoS4,2 in the synthesis of diselenides and thio esters.
The thesis entitled "Chemistry of Thio and Seleno Metallates in Organic Synthesis" is divided into four Chapters.
Chapter 1
In this chapter a detailed studies of alkylation of tetraethylammonium tetraselenotungstate (EuN)2WSe4,1 with a variety of alkyl halides, benzylic halides and acyl halides to yield the corresponding diselenides in excellent yields are described.
(structural Formula)
Scheme 1
Various carbohydrate-derived diselenides were also prepared by treating the sugar bromides with tetraethylammonium tetraselenotungstate 1 (Scheme 2). An attempt was made to synthesize seleno lactones from co- bromo acyl halides. This reaction mainly furnished the corresponding diacyl diselenides (Scheme 3).
The reaction of 1 with aryldiazonium tetrafluoroborates led to the formation of corresponding diselenides or mono selenides depending on the substitution on the aromatic ring (Scheme 4).
(structural formula)
Scheme 2
(structural formula)
Scheme 3
(structural formula)
Scheme 4
Chapter 2
In this chapter a general methodology for the formation of the diselenide bond has been extended to the synthesis of a number of redox- switched crown ethers of various ring size using the reagents tetraethylammonium tetraselenotungstate (Et4N)2WSe4 t 1 and benzyltriethylammonium tetrathiomolybdate, [BnEt3NJ2MoS4,2 (Scheme 5).
(structural formula)
Scheme 5
The association constants for the binding of silver and potassium ions with the diselena crown ethers were determined. This methodology is very useful for obtaining selenacrown ethers under very mild conditions and also without using high dilution conditions.
Chapter 3
In this chapter a general methodology for the facile conversion of amides and lactams to the corresponding seleno amides and selenolactams is described. A number of amides and lactams were converted into their selenocarbonyl derivatives in excellent yield via the formation of Vilsmeier intermediates followed by treatment with tetraethylammonium tetraselenotungstate (EuN^WSe4,1 (Scheme .6).
(structural formula(
Scheme 6
Chapter 4
In this chapter, a general method for the synthesis of thioesters is described. The reaction of p- nitrophenyl esters and disulfides with benzyltriethylammonium tetrathiomolybdate (PhCH2NEt3)2MoS4,2 furnished the corresponding thio esters in good yield (Scheme (7). The intramolecular version of this reaction furnished dimeric thiolactones as the major product (Scheme 8)
(structural formula)
Scheme 7
(structural formula)
Scheme 8
(for structural formula pl see the original document)
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