What is the purpose of bromination lab?

AIM: The aim of this experiment is to carry out an addition reaction using trans-stilbene and bromine reagent to produce 1,2-dibromo-1,2-diphenylethane. As most chemicals used in this experiment are toxic / harmful, PPE must be used throughout and the experiment should be carried out inside a fume hood.

What is trans-Cinnamic acid used for?

trans-Cinnamic acid is used in the manufacture of flavors, dyes, and pharmaceuticals; but its major use is for the production of its methyl, ethyl, and benzyl esters. These esters are important components of perfumes. The acid is also a precursor to the sweetener aspartame.

What is the formula of cinnamic acid?

C9H8O2
Cinnamic acid/Formula

What is the reaction mechanism for the bromination of alkene?

Reaction Overview: The alkene halogenation reaction, specifically bromination or chlorination, is one in which a dihalide such as Cl2 or Br2 is added to a molecule after breaking the carbon to carbon double bond. The halides add to neighboring carbons from opposite faces of the molecule.

What are the dangers of using bromine reagent?

Causes severe eye irritation and possible burns. Skin: Causes skin irritation and possible burns. Ingestion: Causes severe digestive tract burns with abdominal pain, vomiting, and possible death. Inhalation: Irritation may lead to chemical pneumonitis and pulmonary edema.

What is the purpose of bromination of stilbene?

Bromination of (E)-Stilbene. Abstract: The purpose of this experiment was to synthesize the second intermediate (meso-stilbene dibromide) in the E-Stilbene reaction by Bromination.

Is cinnamic acid ortho para directing?

Cinnamic acid is ortho/para directing only for nucleophiles.

Is cinnamic acid a dicarboxylic acid?

Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Cinnamic acid is an organic compound with the formula C6H5CH=CHCOOH. Classified as an unsaturated carboxylic acid, it occurs naturally in a number of plants. …

What foods contain cinnamic acid?

In addition, cinnamic acid can be generally obtained from cinnamon (Cinnamomum cassia (L.) J. Presl), citrus fruits, grape (Vitis vinifera L.), tea (Camellia sinensis (L.) Kuntze), cocoa (Theobroma cacao L.), spinach (Spinacia oleracea L.), celery (Apium graveolens L.), and brassicas vegetables [18].

What type of reaction is bromination?

[Worth noting: bromination of alkenes is technically an oxidation reaction, because each carbon goes from being bound to another carbon (0) to bromine (–1).

Why ccl4 is used in halogenation?

In tetrachloromethane, CCl4 (carbon tetrachloride), Br2 is far more soluble than in water. Bromine and CCl4 are both nonpolar, with the only forces present being dispersion forces. They are also very comparable and “like dissolves like” prevails.

How is bromination of trans-cinnamic acid done?

The tube was put in a 50 degree celcius water bath till all the trans-cinnamic acid dissolves. Next 1.0mL of 1.0M Br2 in acetic solution. the mix was stirred via agitation at 50 degrees Celsius till the color faded from red/brown to light orange and was heated for another 15 minutes.

What is the melting point of trans cinnamic acid?

The (2R, 3S) and (2S, 3R) have a melting point of 202-204 degrees Celsius. The (2R, 3R) and (2S, 3S) have a melting point of 93.5 to 95 degrees Celsius. Things that were done: 150 mg trans-cinnamic acid and .6 mL glacial acetic acid were put acid in a test tube.

What happens when bromine is added to dichloromethane?

The mixing of trans-cinnamic acid with 10% bromine in dichloromethane over a low heat enables to increase the speed of the reaction. The mixture was later cooled to room temperature and then placed on an ice bath.

Which is the best solvent for bromination of cinnamic acid?

The main ones are the following: IR data (in KBr disc) of mesostilbene dibromide 3030-3090 cm-1: =C-H 1450 and 1500 cm-1: C=C For 1H-NMR spectroscopy CDCl 3or DMSO-d6are suitable solvents.