8,095 research outputs found
The Duff Reaction: Researching A Modification
No full textFormylation reactions are used to synthesize aldehydes. The Duff reaction is a formylation reaction that uses phenol derivatives, hexamethylenetetramine, acetic acid, and acid to synthesis ortho substituted aromatic aldehydes. The Duff reaction is known for its low percent yield. In a previous project it was found that dimethyldichlorosilane increased the yield of 2-hydroxy-1-naphthaldehyde. This project verified that, but also determined that trimethylsilyl chloride achieved better yields. The modified Duff reaction was studied on 2-naphthol, 4-tert-butylphenol, 8-hydroxyquinoline, and butylated hydroxyanisole. 2-hydroxy-1-naphthaldehyde was synthesized relatively purely with an increased yield over the traditional Duff reaction. Attempted synthesis of 5-tert-butylsalicylaldehyde resulted in slightly higher percent yields over the traditional Duff reaction, but 1H NMR indicated that the yields for both, modified and traditional Duff reactions, were a mixture of 5-tert-butylsalicylaldehyde and starting material. Synthesis of 8-hydroxy-7-quinolinecarboxaldehyde was attempted. The yields were higher for the traditional Duff reaction than the modified reaction. 1H NMR indicated that the modified and traditional Duff reaction produced products that were so impure it was not possible to determine the desired product from the impurities. Synthesis of 3-(1,1-dimethylethyl)-2-hydroxy-5-methoxy-benzaldehyde resulted in relatively high yields for both the modified and traditional Duff reactions with the modified having a slightly higher yield. 1H NMR showed that the product was not entirely pure. The impure product and p-anisidine were used to synthesize 2-(1,1-dimethylethyl)-4-methoxy-6-[[(4-methoxyphenyl)imino]methyl]-phenol. The yields of the imine were higher for the reactions that originated from the modified reaction. 1H NMR showed that the imine formed was pure. Trimethylsilyl chloride was able to increase the yield for some of the compounds. The reason for the modest and variable yield improvement is unknown
Week 5: Duff Vs. The Dean
No full textPromotional poster for week five of UNE political science series Election 2016 — WTF??!!, a student-planned weekly gathering featuring themes revolving around the 2016 U.S. presidential election. Week five featured a debate between Political Science Department Chair Brian Duff and College of Arts and Sciences Dean Jeanne Hey. Dr. Duff represented Donald Trump and Dr. Hey represented Hillary Clinton. This series was held at UNE\u27s Biddeford campus September-November, 2016.https://dune.une.edu/election2016wtf/1005/thumbnail.jp
Author Interview with Brian D. Anderson
No full textBrian D. Anderson was our feature artist of the week, October 19th - 23rd, 2020.https://jagworks.southalabama.edu/vid_presentations/1010/thumbnail.jp
Competition policy. by Brian Ellis
No full texttag=1 data=Competition policy. by Brian Ellis
tag=2 data=Ellis, Brian
tag=3 data=Australian Rationalist,
tag=5 data=46
tag=6 data=Autumn/Winter 1998
tag=7 data=51-56.
tag=8 data=ECONOMIC CONDITIONS
tag=9 data=COMPETITION%CORPORATISATION%NATIONAL COMPETITION POLICY%PRIVATE SECTOR PUBLIC SECTOR EFFECTIVENESS%SERVICE DELIVERY%SOCIAL POLICY%INNOVATION
tag=10 data=Examines the Government's National Competition Policy in relation to encouraging R&D, and the corporisation of public services and utilites. The author is Emeritus Professor of Philosophy at La Trobe UNiversity and Vice-President of the Rationalist Society of Australia. Article Taken from What's New.
tag=13 data=CABExamines the Government's National Competition Policy in relation to encouraging R&D, and the corporisation of public services and utilites. The author is Emeritus Professor of Philosophy at La Trobe UNiversity and Vice-President of the Rationalist Society of Australia. Article Taken from What's New
Art Behind Gaming: Brian D. Anderson
No full textA discussion with author Brian D. Anderson about worldbuilding in fantasy. Part of the Art Behind Gaming Online Con.https://jagworks.southalabama.edu/vid_presentations/1046/thumbnail.jp
In Honour of Brian MacWhinney: A Personal Account
No full textWhile this volume and the writings have made it amply clear what significant contributions Professor Brian MacWhinney has made to the field at large, in this afterword, we begin with a senior member of our author team (Ping Li, PL) followed by a mid-career member (Helen Zhao, HZ) and an early career member (Zhe Gao, ZG), to provide our personal accounts of Brian not only as a leading scholar but also as a role model who touches and changes people’s lives
Hermits, recluses and anchorites: a study of eremitism in England and France c. 1050 - c. 1250
No full textEremitism is a broad movement and took many different forms during the course of the middle ages. This thesis is a comparative study of the eremitic life in England and France during the period when it had, arguably, reached the height of its popularity. While eremitism in both countries shared many common characteristics, there were also differing interpretations of how this ideal should be achieved. That is most noticeable in the way eremitic communities were structured and in the activities with which they engaged. Inevitably, modem perceptions of medieval eremitism are shaped by the sources available, notably the writings of the hagiographers, all of whom had their own objectives when choosing to write the Life of a particular hermit. Modem historians, therefore, view medieval eremitic practices through the words of these hagiographers rather than through the actions of the hermits themselves.Using extant Vitae and other relevant texts, this study begins with an assessment of the primary sources, and how the language they use has affected both medieval and modem perceptions of the hermit. The terminology adopted for differentiating between a hermit, recluse and anchorite, if indeed, this is necessary, is significant to this debate and is discussed in the first two chapters. The following three chapters (3-5) examine how hermits lived, the support stmctures they created and how these differed in England and France. While hermits established their own networks, they were still reliant on sponsorship from both the Church and society, which helped them to lead lives in accordance with their high ideals. The final three chapters (6-8) offer an analysis of the broad range of activities which hermits undertook, both spiritual and temporal, and explores how they interacted with the Church and society through these activities. It was due to such interaction that they were seen as channels for divine power and regarded by contemporaries as 'living saints'
Interview with Brian Alleyne, Sociologist Studying KDE
No full textA few months ago, the British journal Sociology published an article titled "Challenging Code: A Sociological Reading of the KDE Free Software Project". Eager to find out what a 'sociological reading' of KDE entails, Dot editor Oriol Mirosa rushed to contact the article's author, sociologist Brian Alleyne, who graciously and patiently agreed to be the subject of an interview
Understanding Author Rights
No full textAuthor Rights is the term used to describe a researcher\u27s rights related to their published work. In this session, Brian Young will: 1) provide an overview of author rights, 2) explain language often used in the publication agreement, and 3) demonstrate a tool (Sherpa Romeo) that can be used to quickly understand what default rights you have (and lose) when you publish with a specific journal
Shady trading on the rights market. by Brian Pollard
No full texttag=1 data=Shady trading on the rights market. by Brian Pollard
tag=2 data=Pollard, Brian
tag=3 data=New Doctor,
tag=6 data=Winter 1995
tag=7 data=11-12.
tag=8 data=EUTHANASIA
tag=10 data=Because the spotlight of public attention has been strongly focused on doctors in this debate, the author believes that it is essential that every doctor makes a clear distinction between his or her private views on the practice of euthanasia and its legislation, because the implications in each case are simply not comparable.
tag=11 data=1995/1/5
tag=12 data=95/0224
tag=13 data=CABBecause the spotlight of public attention has been strongly focused on doctors in this debate, the author believes that it is essential that every doctor makes a clear distinction between his or her private views on the practice of euthanasia and its legislation, because the implications in each case are simply not comparable
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