Diels Alder Research laboratory Report

 Diels Tredje alder Lab Record Essay

The Diels-Alder Response

Submitted by simply: Joe Student Partner: Jill Student

Date: February 8, 2005 KONSTRUERA: Super KONSTRUERA

Reaction +OOOxylene140 oCOOO

Data Table

Reagents

MW

Grams used

Lit. Mp

Anthracene

178. twenty three g/mol

1 ) 023 g

216-218ºC

Maleic anhydride

98. 06 g/mol

0. 497 g

54-56ºC

Products

MW

Grams acquired

Lit. Mp

Observed Mp

Crude merchandise

276. 30 g/mol

1 . 362 g

261-262ºC

260. 2-261. 3ºC

Recryst. Merchandise

276. 30 g/mol

1 ) 283 g

261-262ºC

261. 3-261. 9ºC

Results and Discussion

Talk about the data that your crew obtained with this section. Make sure to address any kind of questions presented in the research laboratory procedure and also any additional concerns that the TA wishes you to response. You should also evaluate any NMR spectra that you have got from the response (if applicable). Spectra of starting supplies are available for the Vista internet site. This effect was performed using regular reflux conditions. Both the anthracene and maleic anhydride mixed immediately in xylene to provide a slightly yellowish solution. As the reflux was carried out, the reaction blend appeared to deepen a bit in color, along with 30 minutes, it had been a distinct yellow-colored color. Ravenscroft formation took place almost immediately after removing the round-bottomed flask from the warming mantle, with even more uric acid forming during the time the flask was in the ice bath. The crystals were a soft yellow color, with an irregular, powdery shape. The crude material was recrystallized from hot xylene. Xylene is an excellent solvent for the two anthracene and maleic anhydride, as evidenced by their complete solubility in the early part of the synthesis. Due to this fact, any unreacted starting materials would remain soluble over the recrystallization process. Additionally , the Diels-Alder product is soluble in boiling xylene, but absurde in amazing xylene. Can make for an ideal recrystallization solvent. The purified crystals that had been collected from the recrystallization were a weak off-white color, with a frequent,...

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