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Dissertations / Theses on the topic '3-Sulfolene'

Author: Grafiati

Published: 4 June 2021

Last updated: 17 February 2022

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1

Chaloner, Lynne Marie. "Heterocyclic o-quinodimethanes from 3-sulfolenes." Thesis, University of Liverpool, 1993. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.333628.

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2

Ardes-Guisot, Nicolas. "Intramolecular inverse demand diels-alder approaches to alkaloids starting from 3-carbomethoxy-3-sulfolenes." Thesis, University of Salford, 2005. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.491032.

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Over the last 4 years, our research interests were focused on the development of new methodologies for the synthesis of 5-substituted-3-carbomethoxy-3-sulfolenes, never reported before, and their application in total synthesis of natural products.

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3

ZHENG, MENG-YI, and 鄭孟琦. "New synthetic applications of 3-(phenylsulfonyl)-4-(trimethylsilyl)-3-sulfolene." Thesis, 1992. http://ndltd.ncl.edu.tw/handle/54393321674143814243.

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4

吳夢菊. "A Study of 3-Nitril-3-Sulfolene and Corresponding Derivatives." Thesis, 1992. http://ndltd.ncl.edu.tw/handle/45691830913648913618.

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5

LI, JUN-XIAN, and 李俊賢. "Intramolecular diels-alder reactions and applications via 3-(phenylsulfonyl)-3-sulfolene." Thesis, 1992. http://ndltd.ncl.edu.tw/handle/63658787292927238448.

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6

李明堅. "Intramolecular Dies-Alder Reaction of 3(Phenylthio)-4 -(trimethylsilyl)_3-Sulfolene." Thesis, 1990. http://ndltd.ncl.edu.tw/handle/45181212031021699364.

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碩士<br>輔仁大學<br>化學學系<br>78<br>3- (Phenylthio)-4-(trimethylsilyl)-3-sulfolene upon treatment with n-BuLi at low temperature reacted with 5-iodo-l-pentene or 6-iodo-l-hexene to give nucleophilic substitution reactions. Besides the expected C5 alkylation products, the C2 regioisomers were also obtained due to the competition of electron -withdrawing effect of the phenylthio group and the steric hindrance of the trimethylsilyl group. Heating the alkylation mixture in refluxing toluene effectively gave the diene resulting from desulfonylation of only the C5 alkylation products. Further heating of

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7

Brant, Michael Glenn. "Synthesis of Bicyclic Sulfones: Inhibitors of Neuraminidase." Thesis, 2015. http://hdl.handle.net/1828/6339.

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The lithiation of 3-sulfolene followed by subsequent treatment with an alkyl halide electrophile has been previously established as a method to produce 2-substituted-3-sulfolenes. Tandem reactivity with bis-alkyl halides has been observed to afford relatively simple bicyclic products. We hypothesized that it may be possible to access more complex bicyclic systems through use of bis-vinyl ketones as the electrophilic component. Herein, we present the outcome and mechanistic insights for the reaction between a variety of 3-sulfolene and substituted-3-sulfolene anions with bis-vinyl ketones to af

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8

Chang, Chin-Jyh, and 張欽智. "Reactions of 3-Sulfolenyl Zinc and 3-Sulfolenyl Copper with Electrophiles." Thesis, 1997. http://ndltd.ncl.edu.tw/handle/60885562331188234782.

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碩士<br>國立臺灣大學<br>化學系研究所<br>85<br>Sulfolenyl zinc can be prepared from sulfolenyl lithium by a metal ion exc hange reaction. This sulfolenyl zinc can react with carbonyl compounds to give addition products in high yields. Zinc sulfolenylate exhibits quite different regioselectivity from lithium sulfolenylate toward carbonyl carbonyl electro philes. Sulfolenyl copper, generated from sulfolenyl lithium and cuprous sal t, reacts with αβ-unsaturated ketones to produce 1,4-addition compounds. How ever, it r

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9

Pi-Wei, Liang, and 梁丕偉. "Synthesis and Applications of 3-Phenylsulfinyl-3-sulfolenes." Thesis, 2002. http://ndltd.ncl.edu.tw/handle/29986930596832262527.

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博士<br>輔仁大學<br>化學系<br>90<br>Abstract The 3-phenylsulfinyl-3-sulfolene 2 was readily prepared by m-CPBA oxidation of the sulfide 1. Thermal desulfonylation of 2 gave 2- phenylsulfinyl-1,3-butadiene 4. The Diels-Alder reactions of 4 with various dienophiles gave the cyclized products 5-15 in good yields. The regiochemistry was found to be dominated by the phenylsulfinyl group. Deprotonation of 2 by BuLi (1 equiv) followed by the reaction with alkyl halides gave the substituted 2-sulfolenes 16-20. A synthetic application of 20 was demonstrated by converting 20 to the bicyclic product 2

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10

LIU, SHI-YONG, and 劉勢勇. "Synthesis and applications of 3-phenylthio-3-sulfolenes." Thesis, 1987. http://ndltd.ncl.edu.tw/handle/63440232869806950856.

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11

Chen, Hong-Chuan, and 陳宏銓. "I. Syntheses and Reactions of Heteroaromatic Fused 3-Sulfolenes II. Type II Intramolecular Diels-Alder Reactions of Fused 3-Sulfolenes." Thesis, 1997. http://ndltd.ncl.edu.tw/handle/91118543402493749724.

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博士<br>國立臺灣大學<br>化學系研究所<br>85<br>The syntheses of oxazolo-,quinolo- and isoquinolo-3-sulfolenes and their deriv atives that can be used to generate the corresponding o-dimethylene heteroarom atics(DMHAs) from 3-sulfolene derivatives and 3-methoxycarbonyl-4-oxotetrahydr othiophene are described.Treatment of 3-benzamido-4-oxotetrahydrothiophene 1,1 -dioxide with PCl5 gives the desired oxazolo-3-sulfolene. Condensation of anil ine and 3-methoxycarbonyl-4-oxotetrahydrothiophene, followed by cyclization, a lkyl

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12

蔡琮瑩. "Syntheses and Reactions of Heteroaromatic Fused 3-Sulfolenes." Thesis, 1992. http://ndltd.ncl.edu.tw/handle/90821971591281356454.

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13

柯崇文. "Synthesis and applications of heteroaromatic-fused 3-sulfolenes." Thesis, 1997. http://ndltd.ncl.edu.tw/handle/54269238474077646393.

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14

Chao, Mao Hsun, and 趙懋勳. "Synthesis and Application of 3-(Phenylthio)-2-sulfolenes." Thesis, 1995. http://ndltd.ncl.edu.tw/handle/07402842630996458449.

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碩士<br>輔仁大學<br>化學學系<br>83<br>Treatment of 3-(phenylthio)-2-sulfolene (13) with 1 equiv of butyllithium at -78 Celsius in THF followed by addition of electrophiles gave the 2-substituted 3-(phenylthio)-2- sulfolenes (14), but not all of which can be converted to diene upon heating with base. One of these product, 3-(phenylthio)-2 -(trimethylsilyl)-2-sulfolene (14h), was successfully converted to 3-(phenylthio)-2-(trimethylsilyl)-3-sulfolene (17) by addition of butyllithiu

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15

柯崇文. "Synthesis and reactions of α,ω -Bis(3-sulfolenyl)alkanes". Thesis, 1991. http://ndltd.ncl.edu.tw/handle/08673109062941323047.

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16

ZUO, XI-HUA, and 左西華. "Direct alkylation, acylation and trimethylsilylation reactions of 3-sulfolenes and its applications on synthesis." Thesis, 1986. http://ndltd.ncl.edu.tw/handle/72142918027472132575.

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17

Chiu, Hao-Chieh, and 邱皓杰. "Cycloaddition and Synthetic Applications of 2-Substituted 4-Phenylthio-3-sulfolenes with p-Toluenesulfonyl Isocyanate." Thesis, 2002. http://ndltd.ncl.edu.tw/handle/50619854671787672067.

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碩士<br>輔仁大學<br>化學系<br>90<br>This thesis is mainly concerned with the cycloaddition reactions of 2-substituted 4-phenylthio-3-sulfolenes with p-toluenesulfonyl isocyanate. This kind of [4+2] cycloaddition reactions can synthesize 6-membered ring nitrogen compounds. We will study the effect of different substituents at C-2 of 4-phenylthio-3-sulfolenes on the reactivity of these [4+2] cycloaddition reactions. The other part of the study is to carry out suitable functional group transformation of the cycloaddition products in order to achieve intramolecular cyclization. We su

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