Chemical synthesis

reducing gases. According to thermodynamics, it is impossible to obtain metallic aluminum and chromium in the autocombustion process because Al2O3 and Cr2O3 cannot be reduced to metals by any type of the gases formed in the combustion. Therefore, the synthesis of CoCrCuNiAl HEAs is through the second route. Recently, (Co,Cu,Mg,Ni,Zn)O high-entropy oxides (HEOs) were synthesized by pyrolyzing nitrates of the individual metals according to the report of Sarkar et al.25 Similar with HEAs, HEOs containing

Pharmaceutical Industry: Chemical Synthesis Production of Acetylsalicylic Acid I. Introduction Pharmaceutical industry is one of the biggest industry in the world as it involves drugs and medications - something that is very stable in terms of demand. This can be proven by the amount of sales as of 2012. Figure 1.1 shows the breakdown of the market of the pharmaceutical industry worldwide. However, aside from the production and synthesis of drugs and medications, the industry is also involved

. Ecologically safe methods for the synthesis of five-membered and six-membered cyclic carbonates by the reaction of transesterification of dialkyl carbonates with dihydric alcohols will be developed. 2. Methods will be developed for the preparation of 2-hydroxyethyl, 2- and 3-hydroxypropyl, 3-hydroxybutyl derivatives of a number of alcohols, thiosparts, carboxylic acids, amides, sulfonamides, amines, heterocyclic compounds. 3. New coordination compounds Zn (II), Cu (II), Ni (II), Co (II), Fe (III)

Abstract: The purpose of this lab was to synthesize triphenylmethanol from benzophenone and bromobenzene by the formation of a Grignard compound with the reagents bromobenzene and magnesium metal. The bromobenzene was first transformed into the Grignard compound and was then reacted with the benzophenone to make the final product. The mixture was then mixed with sulfuric acid and the organic layer was extracted via a separatory funnel. The mixture was then recrystallized from methanol and was allowed

4.0 DISCUSSION The biological method of quantum dot synthesis using F. oxysporum has been proven to successfully synthesize highly photostable and luminescent QDs in an environmentally friendly manner. However, in order to increase the demand for biological methods of production, the yield of QDs synthesized by this method must be increased. This study considers several factors that affect QD synthesis by fungi and modifies them in F. oxysporum in order to increase QD yield. The fungus, F. oxysporum

Multistep Synthesis of Tetraphenylcyclopentadienone In this laboratory experiment a synthesis was performed through several separate steps. The purpose of the experiment was to synthesize tetraphenylcyclopentadienone from benzaldehyde and to run reactions on carbonyl containing compounds. There was a total of three steps that led up to the synthesis of the final product, tetraphenylcyclopentadienone. The first step of the experiment was the condensation of benzaldehyde to yield

complex route and many issues to overcome (Huang, Wang, Chen, 2014). The reason that it is so difficult is that the researchers are attempting to fully synthesize the ingredient, hypericin, and want to do so with a great enough yield to be productive. Synthesis of hypericin without the ingredient itself has been achieved by using various routes and ending with a 50% yield. However, it was done so with many obstacles - low yield, varying routes, large volumes of solvents, the high cost of reagents and solvents

0274g, making the percent yield 118%. Possible explanation for a large percent yield could have been due to the product not being completely dry when being weighed or the presents of contaminates in the final product. A TLC was conducted during the synthesis of tetraphenylporphyrin; this is useful in monitoring the progression of the reaction because it helps identify what is present in the reaction in terms of starting materials and

A 1,3,4-thiadiazole library was constructed by solid-phase organic synthesis. The key step of this solid-phase synthesis involves the preparation of polymer-bound 2-amido-5-amino-1,3,4-thiadiazole resin by the cyclization of thiosemicarbazide resin using p-TsCl as the desulfurative agent, followed by the functionalization of resin by alkylation, acylation, alkylation/acylation, and Suzuki coupling reaction. Both the alkylation and acylation reactions chemoselectively occurred at the 2-amide position

studies and research, I became determined in pursuing a graduate carrier, in which I aim to grow into an expert in chemical reactivities and an independent scientist who can invent chemistry and contribute to the development of pharmaceuticals. In my sophomore year, I was intensely drawn to organic chemistry in Professor Thomas Maimone’s class. The elegant and logical framework of chemical transformations absorbed me. I learned the fundamental roles of organic chemistry in drug discovery and became