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Pretvorbe α-oksoketen ditioacetalov v prisotnosti joda
ID Vrabec, Meta (Author), ID Jereb, Marjan (Mentor) More about this mentor... This link opens in a new window

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Abstract
V magistrski nalogi sem raziskovala pretvorbo α-oksoketen ditioacetalov v prisotnosti joda s perfluorofenil hidrazinom. Pri tem so nastali 5-(metilsulfanil)-1-(pentafluorofenil)-1H-pirazoli. V nalogi je opisana in komentirana priprava izhodnih spojin. Naslovne pretvorbe so potekale v aprotičnih topilih in s 40–60 mol% joda kot promotorja. Izkoristki reakcij so v večini primerov zmerno dobri. Med izkoristki in stereoelektronskimi efekti substituentov ni jasne povezave. Vse nove produkte sem karakterizirala z 1H, 13C in 19F NMR, IR spektroskopijo, elementno analizo in/ali masno spektroskopijo visoke ločljivosti in izmerila njihovo tališča.

Language:Slovenian
Keywords:α-oksoketen ditioacetali, jod, pentafluorofenil hidrazin, 5-(metilsulfanil)-1-(pentafluorofenil)-1H-pirazoli
Work type:Master's thesis/paper
Typology:2.09 - Master's Thesis
Organization:FKKT - Faculty of Chemistry and Chemical Technology
Year:2021
PID:20.500.12556/RUL-131634 This link opens in a new window
COBISS.SI-ID:87701507 This link opens in a new window
Publication date in RUL:30.09.2021
Views:601
Downloads:66
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Secondary language

Language:English
Title:Transformations of α-oxoketene dithioacetals in the presece of iodine
Abstract:
In this master thesis the investigation of transformation of α-oxoketene dithioacetals in the presence of iodine with pentafluorophenyl hydrazine is presented. It resulted in formation of 5-(methylsulfanyl)-1-(pentafluorophenyl)-1H-pyrazoles. Synthesis of α-oxoketene dithioacetals is also reported and discussed. Their transformation occured in aprotic solvents and with 40–60 mol% of iodine as promotor. Most reactions gave good yields. There is no clear correlation between the yield and stereoelectronic effects of the substituents. All new substances were characterised by 1H-, 13C- and 19F-NMR, IR spectroscopy, elemental analysis and/or mass spectrometry and by measuring their melting point.

Keywords:α-oxoketene dithioacetals, iodine, pentafluorophenyl hydrazine, 5-(methylsulfanyl)-1-(pentafluorophenyl)-1H-pyrazoles

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