Synthesis Essay

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    Isoquinoline Synthesis

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    An effective method for the synthesis of of pyrrolo[2,1-a]-isoquinoline and its dihydro- and tetrahydro-derivatives was described33 involving two steps. Isoquinoline, halogenated methylene compounds, aromatic aldehydes, and cyanoacetamide reacted to give tetrahydropyrrolo[2,1-a]isoquinolines(54-56).The corresponding pyrrolo[2,1-a]isoquinolines and dihydropyrrolo[2,1-a]isoquinolines can be obtained by selective oxidation with DDQ. The mechanism of the reaction affords 1,3-dipolar cycloaddition of

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    Compound 3 Synthesis

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    Synthesis of 1-cyclohexyl-3-ethylthiourea (3) Compound 3 was obtained following the synthetic procedure of 2. Yield: (105 mg, yield: 94%). 1H NMR (500 MHz, CDCl3): δ 5.66–5.57 (d, 2H, NH), 3.87 (s, 1H, CH), 3.42 (s, 2H, CH2), 2.05–2.02 (m, 2H, CH2), 1.75–1.71 (m, 2H, CH2), 1.41–1.34 (m, 2H, CH2), 1.25–1.22 (t, 3H, CH3), 1.25–1.16 (m, 4H, CH2) ppm. 13C NMR (125 Hz, CDCl3): 180.16, 53.05, 38.99, 32.95, 25.42, 24.74, 14.20 ppm. HRMS (ESI) m/z: [M]+ calculated for C9H18N2S 186.1191; found: 186.1161.

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    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

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    4-d]thiazoles and antimicrobial activity. INTRODUCTION Benzothiazoles are heterocyclic compounds with multiple application and although they have been known from long ago to be biologically active.1-3 Recently, Racane et al4 have described the synthesis of bis-subsituted amidinobenzothiazoles as potential anti-HIV agents. The condensation of dithio-oxamide with aromatic aldehyde was described by Ephraim.5 More recently, Johnson and Ketcham6 studied the reaction and established the structure of

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    To explore the synthetic potentiality of 5-aminopyrazole 5 in pyrazolo[1,5-a]pyrimidine synthesis, we investigated the reactivity of compound 5 toward α-cinnamonitriles. Thus, reaction of compound 5 with α-cinnamonitriles 8a,b in refluxing ethanol in the presence of a catalytic amount of piperidine yielded a single product for which structure 10 or 11 seemed possible. Structure of 10 appears more likely than 11 on the basis that ring nitrogen of pyrazole nucleus is the most nucleophilic one in the

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    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

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    Totally seven peptides were synthesized using solid phase peptide synthesis chemistry with Wang resin as supporting matrix. Two among them were synthesized in linear format and five peptides in MAP format with two arms. The MAP-core was having lysine mosaic with cysteine at the C-terminal end. The sequence and molecular weight of linear as well as MAP core peptides are listed in the table 2. In the initial characterization, all the five chemically synthesized peptides in MAP format showed specific

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    Acoustic Theory and Synthesis Frequency: Frequency means the number of cycles per second and depending on the amount of cycles per second determines how high or low pitched the sound is and the time that it takes to complete one cycle is called the period. Frequency is measured in Hertz (Hz). And An average human is able to hear sounds between 20Hz and 20,000Hz. As the cycles per second increases, the smaller the wavelengths become, therefore there is a higher frequency which will cause

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    to controlling an outcome. A dialectical (Divided) method of argument by 19th Century German philosopher, G.W.F. Hegel. It is a method Comprised of Thesis, antithesis, and synthesis. The Hegelian Dialectic. A process where the contradiction between the Thesis and Antithesis resolves to a higher level of truth, the synthesis. Also knows as the Problem, Reaction, Solution. Its getting to the truth by exchange of logical arguments. When manipulating this method a person or group of people are swayed

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    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

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