Loading...

Messages

Proposals

Stuck in your homework and missing deadline? Get urgent help in $10/Page with 24 hours deadline

Get Urgent Writing Help In Your Essays, Assignments, Homeworks, Dissertation, Thesis Or Coursework & Achieve A+ Grades.

Privacy Guaranteed - 100% Plagiarism Free Writing - Free Turnitin Report - Professional And Experienced Writers - 24/7 Online Support

Anthracene and maleic anhydride

28/03/2021 Client: saad24vbs Deadline: 2 Day

LAB REPORT EXAMPLE-DIELS ALDER

Abstract

The Diels Alder reaction is a cycloaddition reaction widely used to synthesize six-member rings. In our experiment we

conducted the synthesis of 9,10-Dihydroanthraceno-9,10-endo-α,β-succinic anhydride from anthracene and maleic

anhydride. We obtained X g of product (X% yield). The desired compound was analyzed by 1H NMR and TLC. Both

techniques showed that the compound was pure, and no starting material was present. The m.p was recorded, and it was

256-259 °C in agreement with values reported in literature.

Introduction

The Diels Alder reaction is a [4+2] cyclo-addition utilized to synthesize six-member ring. It requires the s-cis form of the

diene for the appropriate overlapping of the π of the diene and dienophile. A recent paper published by Amant et al

reports the use of Diels Alder in the conjugation of maleimide-containing drugs to antibodies. [1] Anthracene, one of the

reagents used in the experiment, acts as the diene; it is an aromatic compound consisting of three fused rings, often used

as backbone for dyes. [2] Maleic anhydride acts as the dienophile and it is commonly used in the synthesis of polymers and

resins.

Discussion

In this lab experiment we reacted anthracene (diene) with maleic anhydride (dienophile) to obtain 9,10- Dihydroanthraceno-9,10-endo-α,β-succinic anhydride. The reaction mixture was refluxed in xylene for 30 minutes,

followed by filtration of the precipitate. The product purity was tested by TLC comparing it with anthracene. TLC showed

that anthracene Rf was quite high (0.95) whereas the Rf of product was 0.65; therefore, a less polar eluent could be used.

We did not observe any starting material left over in the TLC analysis. 1 H NMR confirmed the presence of the compound,

showing 8 aromatic protons in the area between 7.2 ppm and 7.6 ppm. The two signals at 5ppm and 3.5 ppm are

characteristic of the newly formed six-member ring, therefore diagnostic for the formation of our desired compound. The

reaction is shown in the scheme below and involves a concerted mechanism for the formation of the final product.

Table of reagents:

Reagent MW Number of moles

anthracene

Maleic anhydride

Calculations: show calculations for the yield indicating the limiting reagent

Yield= number of moles of product/ number of moles of limiting reagent

% yield= Yield *100

Number of moles = weight in grams of compound / molecular weight of compound

Experimental:

0.2 g of anthracene and 0.1 g of maleic anhydride were refluxed in 2.5 ml of xylene for 30

minutes. After cooling the solution in ice, white crystals were collected. Mp (256-258 °C),

Rf (product): 0.65. 1H NMR (CDCl3, 300 MHz) δ: 7.6-7.4 (m, 4H, ArHa), 7.3-7.1 (m, 4H, ArHb),

Homework is Completed By:

Writer Writer Name Amount Client Comments & Rating
Instant Homework Helper

ONLINE

Instant Homework Helper

$36

She helped me in last minute in a very reasonable price. She is a lifesaver, I got A+ grade in my homework, I will surely hire her again for my next assignments, Thumbs Up!

Order & Get This Solution Within 3 Hours in $25/Page

Custom Original Solution And Get A+ Grades

  • 100% Plagiarism Free
  • Proper APA/MLA/Harvard Referencing
  • Delivery in 3 Hours After Placing Order
  • Free Turnitin Report
  • Unlimited Revisions
  • Privacy Guaranteed

Order & Get This Solution Within 6 Hours in $20/Page

Custom Original Solution And Get A+ Grades

  • 100% Plagiarism Free
  • Proper APA/MLA/Harvard Referencing
  • Delivery in 6 Hours After Placing Order
  • Free Turnitin Report
  • Unlimited Revisions
  • Privacy Guaranteed

Order & Get This Solution Within 12 Hours in $15/Page

Custom Original Solution And Get A+ Grades

  • 100% Plagiarism Free
  • Proper APA/MLA/Harvard Referencing
  • Delivery in 12 Hours After Placing Order
  • Free Turnitin Report
  • Unlimited Revisions
  • Privacy Guaranteed

6 writers have sent their proposals to do this homework:

Quick N Quality
24/7 Assignment Help
Helping Hand
Best Coursework Help
Math Guru
Engineering Help
Writer Writer Name Offer Chat
Quick N Quality

ONLINE

Quick N Quality

I have read and understood all your initial requirements, and I am very professional in this task.

$79 Chat With Writer
24/7 Assignment Help

ONLINE

24/7 Assignment Help

Hello, I an ranked top 10 freelancers in academic and contents writing. I can write and updated your personal statement with great quality and free of plagiarism

$36 Chat With Writer
Helping Hand

ONLINE

Helping Hand

I have read your project details. I can do this within your deadline.

$39 Chat With Writer
Best Coursework Help

ONLINE

Best Coursework Help

I have read your project details. I can do this within your deadline.

$83 Chat With Writer
Math Guru

ONLINE

Math Guru

Give me a chance, i will do this with my best efforts

$70 Chat With Writer
Engineering Help

ONLINE

Engineering Help

I am known as Unrivaled Quality, Written to Standard, providing Plagiarism-free woork, and Always on Time

$31 Chat With Writer

Let our expert academic writers to help you in achieving a+ grades in your homework, assignment, quiz or exam.

Similar Homework Questions

The necklace short story pdf - Euthanasia & Aristotle - How to convert babylonian numerals to hindu arabic - Shear force vs axial force - Graded assignment-4 - Criminal investigations 11th edition by hess and orthmann - Miranda priestly leadership style - Ddos attacks evolution detection prevention reaction and tolerance - Addiction - Corporate IT Security Audit Compliance - How to raise leverage in capsim - Finance questions-8 - Corporate valuation ppt - Overt vs covert attention - Science investigatory project write ups sample - Fdlmarks - Cloud Computing - The prime factorization of 68 - Nursing Information Management And Technology Discussion W3 - Where was jesus crucified theo 104 - Ethical dilemma and ethical lapse - Ix bull head locations - Escucha la conversación y completa las oraciones - Table tennis competition sydney - Csec english sba reflection sample - No warmth could warm nor weather chill him - Does the acid or base go in the burette - Polypropylene in automotive applications - Kurt schwitters picture with light center - Why cats and dogs fight - Proposal - Discussion Week 9 - Solid magnesium plus oxygen gas yields solid magnesium oxide - Nurs 6512 week 6 assignment - Gale force surfing case study - How to calculate field of view from magnification - Shell fuze combinations 155mm - Fast ripening rice in china - Task sequence error 0x80070241 - In calculating gdp transfer payments are - Role and purpose of accounting information systems - Write a Research paper on the Legal issues associated with pentesting - Emerging trends in organizational development - Denmark shire fire restrictions - Concept development practice page 33 2 key - As1670 smoke detector spacing - Which conditions are best served by proper breathing exercises - 300 words - Conjugate acid of hso3 - Angela davis i used to be your sweet mama - Refer to table 3-23. the farmer has a comparative advantage in the production of - Z score statcrunch - The whole business with kiffo and the pitbull essay - NURS561REPLYPROMPT1 - Advanced diploma of interpreting online - How do i find out my tasc results - DISCUSSION QUESTION - INFLATION, 350 WORDS AND 3 REFERENCES. - Penn foster writing skills part 2 answers - Courts limited jurisdiction cjt 101 assignment - Volvo fh fridge error codes - Vcaa geography study design - Human resource exam - World History - Repeating unit of polystyrene - Hill phoenix refrigeration cases - Did sandra cisneros have formal training and if so where - Read and answer questions - Midterm - Siemens per meter symbol - Financial Statement Analysis - Analyzing and Visualizing Data - Secure software development concepts support protecting applications - Swot analysis coca cola 2017 - Discussion -2 - Anglia ruskin chelmsford admissions - It's gettin kinda chilly i shoulda put on my hoodie - Cisco ise guest portal customization - Indiana university how to recognize plagiarism - Essay: code of Hammurabi - Who can do this by 7 today - Alexander pope uses poetry to express his ideas because - London~ England~!! +91-9829644411 Love Vashikaran Specialist Molvi Ji - Short summary - Size 9 ring in letters - Business Stat - Solid aluminum hydroxide reacts with nitric acid - Yelp data set sql lookup - Global supply chain management v2 simulation answers - John mulaney or cecil palmer quiz - Introduction to programming using python liang - Importance of engineering ethics ppt - They say i say chapter 7 exercise answers - Case Study: Chemotherapy - Kingspan thermaroof tr27 lpc/fm - Gcu code of conduct - Partnership act 1932 pakistan - Friedel crafts acylation lab report - Difference between domestic and international human resource management - What did charles perkins achieve - Nursing.