Wittig reactions allow the generation of an alkene from the reaction between an aldehyde/ketone and a ylide (derived from phosphonium salt).The mechanism for the synthesis of trans-9-(2-phenylethenyl) anthracene first requires the formation of the phosphonium salt by the addition of triphenylphosphine and alkyl halide. The phosphonium halide is produced through the nucleophilic substitution of 1° and 2° alkyl halides and triphenylphosphine (the nucleophile and weak base) 4 An example is benzyltriphenylphosphonium
Description Think about these substances: mothballs and cinnamon. Both of these have a strong and unique smell. This is because these substances are made of aromatic compounds. In this lesson, we will learn all about aromatic compounds. !!!Aromatic Compounds Let’s think of substances that have are fragrant or have distinct odor like perfume, vanilla and cinnamon. All these substances are known to have a distinct smell and are fragrant, or we can say aromatic. The smell is because these substances
The objective of this experiment was to conduct the Friedel-Crafts Alkylation of p-xylene. This reaction substituted an alkyl group instead of a hydrogen atom on the aromatic ring. The compound used was p-xylene, the reactant was n-propyl chloride, and the Lewis acid catalyst was aluminum chloride. The products consisted of the group of n-propyl that combined with p-xylene to form 1,4 Dimethyl-2-propylbenzene, and the group of isopropyl that combined with p-xylene to form 2-isopropyl-1,4-dimethylbenzene
suggests that the background scan may not have run properly. However, all of the ferrocene peaks are still clearly visible. The most important peaks in this spectrum are the aromatic ones, which show that the cyclopentadienyl ligand retains its aromaticity on binding to the metal centre. The aromatic C-H peaks occur higher than the C-H stretch in an alkene, and there are also aromatic overtones at 1636 cm-1. The Fe-Cp stretch occurs at 471 cm-1 and is a single sharp peak, confirming that
For this experiment, we reduced a ketone to a secondary alcohol. During the first week, everyone ran the reaction using 9-fluoreneone. The ketones for week 2 were derivatives of acetophenone, and my group elected to test the differences in reactivity between acetophenone, 4-methyl-acetophenone, and 4-bromo-acetophenone. We hypothesized that the differences in reactivity would be affected by the electronegativity of substituent. Therefore, we predicted that the 4-bromoacetophenone react the
SYNOPSIS SUBMITTED IN PARTIAL FULFILMENT OF THE DEGREE OF DOCTOR OF PHILOSOPHY IN PHYSICS Submitted by L. SUGI, M.Sc., B.Ed., M.Phil., Ref. No: 17391/Ph.D.K2/Physics/Full-time/July 2014/19.06.2014 Research Guide Dr. S. DHEIVAMALAR, M.Sc., M.Phil., Ph.D., PGDCA. Assistant Professor, Department of Physics Government Arts College for Women (A) Pudukkottai Government Arts College for Women (Autonomous) (Re-Accredited with B by NAAC) Pudukkottai – 622 001 JUNE 2016 Introduction Fullerenes are accepted
Soran, Quinn Dr. Jeffrey Engle Chemistry 263 5/1/16 Synthesis Project Post-laboratory Report 1. For this experiment, three separate pathways were designed to utilize the exact same reagents in different orders to create a synthesis from acetophenone to methyl m-nitrobenzoate. This experiment was constructed in this format to evaluate the efficiency and overall percent yield of each pathway to determine which is most effective in synthesizing methyl m-nitrobenzoate. The pathway implemented in this
Unlocking the Secrets of the Universe Increasing our knowledge of Physics, using the scientific method to make observations and test hypotheses is essential to unlocking the secrets of the universe. Energy is one of the most fundamental elements of the universe. Throughout history, man has endeavored to expose, understand, and explain how and why things work. This drive to expand our understanding eventually led to the development of the scientific method and what is commonly considered to be the