Imine Essays

Unit 3: Formation of ionic and metallic bonds Key unit competence: Describe how properties of ionic compounds and metals are related to the nature of their bonding 3.1. Introduction  Activity 3.1 Look at the pictures above and answer the following questions. Record your answers and discuss them in your groups. 1) Observe carefully pictures A, B and C and suggest the similarity between them. 2) What can you say about the chloride and sodium ions in the pictures above? 3) What holds the chloride

The purpose of this experiment is to perform a two step reductive amination using o-vanillin with p-toluidine to synthesize an imine derivative. In this experiment, 0.386 g of o-vanillin and 0.276 g of p-toluidine were mixed into an Erlenmeyer flask. The o-vanillin turned from a green powder to orange layer as it mixed with p-toludine, which was originally a white solid. Ethanol was added as a solvent for this reaction. Sodium borohydride was added in slow portion as the reducing agent, dissolving

At the start of my freshman year of college, I decided to dive straight into organic chemistry. Having a preview of the subject in a special offered course at the end of my senior year of high school intrigued me and I wanted to learn more. Despite academic advisors telling me I would struggle and possibly fail at taking such a notoriously difficult class at the beginning of my academic career, I felt confident in my ability to take it and be successful, and I was right. During the second part

.1.1 CYTOSINE ANALOGUE PREPARATION WITH AROMATIC ALDEHYDE when aromatic aldehyde is used, magnesium is added to anhydrous methanol or ethanol (4 eq relative to cytosine) and heated until complete dissolution of magnesium filings and add 2 mmol of cytosine, followed by the aromatic aldehyde in the amount of 4-6 eq, minimum of 4 eq relative to cytosine, the reaction mixture is heated up to 45-65°C for at least 3 hours, and later, a reducing agent, preferably NaBH(1 eq relative aldehyde) ,is added to

a toxic drug an overdose can cause liver damage resulting in death. The reason for this toxicity isn't because of the benzene ring found in acetaminophen, which can also cause liver damage, but rather a metabolite known as N-acetyl-p-benzoquinone imine (NAPQI). NAQPI reduces the amount of glutathione (an antioxidant that prevents damage to cells) within the liver and also damages the cells within the

Introduction Cyclodextrins (CDs) are cyclic oligosaccharides consist of (α-1,4)-linked α-D-glucopyranose units produced by bacterial digestion of cellulose. These structurally related natural products contain a central cavity that was lined by the skeletal carbons and ethereal oxygens of the glucose residues, which gave it a lipophilic character to a certain extent while the outer surface is hydrophilic. The 3D-structure of CDs are shaped like a truncated cone rather than perfect cylinders due to

Equ 13. 4-(5-nolyl)-Pyridinum Cation Containing CILs Catalyzed Aldol Reactions Equ 14. Amide Functionalized Proline based CILs Organocatalyst for Aldol Reactions 3.4. Asymmetric Diels-Alder reaction. In 1997, Howarth and his group80 reported first, the asymmetric Diels-Alder reaction by using dialkylimidazolium salts (chiral and achiral) as efficient organocatalyst between crotonaldehyde or methacrolein and cyclopentadiene. The enentiomeric excess was less than 5% and no such diastereoselectivity

Azrines derivatives have been reported to possess variety of activities against microbial organisms. Azrines derivatives also showed other anticipated biological activities. Azrines also used in synthesis of various intermediates compounds for industrial purposes. These compounds have different functionalities in their structures. Azrines are widely used as antibacterial and cytotoxic. Some azrines azrines compounds have various functional groups.1-13 Azirine compounds and their biological activities:

ABSTRACT The Diels-Alder reaction has been an area of great research interest with regards to enhancing enantioselectivity in the reaction by use of various catalysts and reaction conditions. INTRODUCTION In organic chemistry, a Diels-Alder reaction refers to a 4, 2 cycloaddition between a diene consisting of alternating double bonds and a substituted alkene (the dienophile) resulting in a substituted cyclohexene system. The reaction is often used to reliably control regioselective and enantioselective

Isatin The 1H-indole-2, 3-dione (Isatin), possesses an indole nucleus with two carbonyl groups; the keto and lactum group at positions C-2 and C-3. Isatin is an orange to red solid and is mostly used for synthesis of heterocyclic compounds [1]. The chemical structure of Isatin is shown in (Figure 1). Figure 1: Structure of 1H-indole-2, 3-dione (Isatin) In nature, isatin is present in plants of the genus Isatis, in Calanthe discolor lindl and in Couroupita guianensis