CHEM 226 Organic Chemistry Laboratory Spring 2012 Instructor: Dr. Jiba Raj Acharya Office: 133 Beauregard Hall Phone: e-mail: jibaraj.acharya@nicholls.edu 985-448-4167 Course Meeting: Tuesday and Thursday 1:30 pm-4.20 pm Room: Beauregard Hall 244 Office Hours: Posted on the blackboard. However, whenever, l am in the office you are welcome to come in and ask questions. CATALOG DESCRIPTION: CHEM 226. Organic Chemistry Laboratory. 2-0-6. Prerequisite: CHEM 110. Prerequisite or Corequisite: CHEM 222. An introduction to the study of the properties and preparation of organic compounds. (40.0504) PREREQUISITES/COREQUISITE: CHEM 110, CHEM 222 REQUIRED TEXTS AND OTHER MATERIALS: 1. James Zubrick, The Organic Chem Lab Survival Manual, A Student’s Guide to Techniques 2. Safety Goggles—Approved by instructor available in Bookstore 3. Notebook—bound, duplicating notebook with tear out sheets. Available in Bookstore 4. Laboratory Procedures available on Blackboard (be sure they are printed out before class). REQUIRED SUPPLEMENTARY READINGS: Organic journal articles as assigned. COURSE GOALS: The student will develop an understanding of and employ proper techniques used in organic synthesis, data collection, product analysis, and documentation. The student will also develop skills in chemical literature search and critical analysis of relevant chemical literature. STUDENT OUTCOME OBJECTIVES: At the end of this course the student will be able to Synthesize various organic compounds Identify organic compounds using infra-red spectroscopy, thin-layer chromatography, gas chromatography, and nuclear magnetic resonance Identify organic compounds using traditional wet chemistry techniques. Prepare scientific reports utilizing chemical journal articles Discuss critical analyses of chemical journal articles COURSE CONTENT: Schedule of Experiments (Reading assignments from Zubrick in parentheses.) Day 18 January Experiment Check In/Safety Day 24 January 25 January Purifying Acetanilide by Recrystallization. Theory on recrystallization 30 January Experiment Melting Point Determination. Identifying Unknowns by melting point Extraction and Isolation of Natural Products: Extracting Caffeine from Tea Theory on extraction techniques 1 1 February 8 February Steam distillation: Isolation of (R)-(+)-Limonene from Orange Peel. Students should bring two oranges for this experiment Theory on distillation Solventless Aldol Condensation 6 February Bromination of an Alkene: Greener Bromination of E-Stilbene Theory on Green Chemistry 13 February Preparation and Distillation of cyclohexene. Dehydration of cyclohexanol Theory on Green Chemistry 15 February 27 February Friedel-Crafts Acetylation of Ferrocene TLC 20-22 February Friedel-Crafts Acetylation of Ferrocene TLC 29 February 5 March Mardi Gras Holiday No class Electrophilic Aromatic Iodination of Vanilline. 7 March Biosynthesis of Ethanol from Molasses. Start the experiment Review of Midterm Exam Lecture on IR ( Infrared spectroscopy) 7 March 12 March Biosynthesis of Ethanol from Molasses. Simple distillation of ethanol Midterm Exam Theory on boiling point, Renoults Law and fractional distillation and azeotrope 14 March 21 March Biosynthesis of Ethanol from Molasses. Finish the experiment by Fractional distillation of ethanol Lecture on IR ( Infrared spectroscopy) 19 March Experiment A: Reductions Reactions of 3-Nitroacetophenone 26 March Lecture on NMR 1H, 13 C Start experiment: Solid-Phase Photochemistry Lecture on IR ( Infrared spectroscopy) Experiment B: Reductions Reactions of 3-Nitroacetophenone Solid-Phase Photochemistry. Rotate the flask to expose the opposite side. 2 28 March IR Lab: Analyzing the Products of Reductive Reactions of 3-Nitroacetophenone for 2 April experiments A and B Solid-Phase Photochemistry. Workup and purification Lecture on NMR 1H, 13 C 4 April Lecture on NMR 1H, 13 C 9 April Spring vacation No class Report due on Friedel Craft Acetylation of Ferrocene 11 April 16 April Spring vacation No class 18 April Start: Biodiesel synthesis experiment 23 April Solving IR and NMR 1H, 13 C problems 25 April Review of final exam And Checkout Assignment due: IR and NMR assignment 4 May Lecture on NMR 1H, 13 C Assignment given: IR and NMR 1H, 13 C Finish: Biodiesel synthesis experiment Analyzing IR of biodiesel Solving problems IR and NMR 1H, 13C Final Exam *Formal report on Friedel Craft Acetylation of Ferrocene COURSE REQUIREMENTS: All students will perform all experiments using proper safety practices. Prelabs: 10 points/experiment Lab Report: 20 points/experiment 15 experiments 300 points Formal report: 50 points/experiment 1 experiment 50 points Post Labs Questions: 10 points/experiment 1H NMR, 13C NMR and IR assignment 100 points Midterm Exam: 120 points Final Exam: 120 points Prelabs. Due before beginning the experiment. The purpose of prelabs is to prepare you for the experiment. Make sure you read and understand the lab. I will post the prelab questions ahead of time before the experiment. You may not begin the experiment until the prelab section is completed and checked by instructor. 3 POST LAB QUESTIONS: I will post on the blackboard the postlab questions. The purpose of postlab questions is to see whether you understood the techniques you performed during the experiment. LAB REPORT NOTEBOOK Notebooks must be written legibly to avoid loss of points. TITLE DATE PURPOSE Describe what is expected of the laboratory. This should be only one or two sentences, in your own words--do not copy from the manuals. PROCEDURE A flow diagram is best. Abbreviated version of what you will be doing. Read the lab and be familiar with what will be happening. Summarize the steps. DATA TABLE Listing of all of the reagents and solvents used in the experiment. List in table form only. reagent or product molecular weight mass used moles used or or produced produced melting point boiling point density solubility in solvents used. CHEMICAL EQUATIONS Write all of the major chemical reactions and side reactions for the experiment. Include the amounts called for in the experiment (which is the limiting reagent?) and the theoretical yield. Not necessary for the distillation, melting point, or crystallization experiments. OBSERVATIONS All data and everything that occurs in lab as it happens. Colors, smells, amounts used, mixing, temperatures, apparatus used, time for reaction, spills if they occur etc. appropriate, use tables, graphs, equations, etc. Draw pictures if Record details such as Instrument name and maker, model number and serial number, chemical manufacturer, grade, lot number, expiration date, etc. This section cannot be too long. Spectra are also to be included with this section. Due at the end of lab. CALCULATIONS Theoretical yield, Percent Yield, Atom Economy, Economical Analysis CONCLUSION Write the final conclusion FORMAL REPORT : You will write a formal report on Friedel Craft Acetylation one lab. This report should be written in the form of a scientific journal. METHOD OF EVALUATION: A straight percentage is used to determine grade. A = 90% B = 80% C = 65% D = 55% MAKE-UP POLICY: 4 No make-ups are allowed for the experimental or discussion portion of the class. Late laboratory reports will be deducted 5 points per day (including weekends). ACADEMIC HONESTY POLICY: Any student found cheating, including plagiarism, will be subject to the penalties as stated in the Student Code of Conduct handbook; including but not limited to a score of zero on exam, review or report, expulsion from the class or expulsion from the University. ATTENDANCE POLICY: Attendance is mandatory. This is a laboratory class. You must be present to complete the requirements. If you miss one (1) laboratory with an excused absence I will recalculate grade. Unexcused absences result in a zero for that experiment. SEMESTER WITHDRAWALS: The last day to withdraw from the class with a “W” is 4th April 2012. ACADEMIC DISABILITIES POLICY: If you have a documented disability that requires assistance, you will need to register with the Office of Disability Services for coordination of your academic accommodations. The Office of Disability Services is located in Peltier Hall, Room 100-A. The phone number is (985) 448-4430 (TDD 449-7002). ACADEMIC GRIEVANCES. The proper procedure for filing grade appeals or grievances related to academic matters is listed in Section 5 of the Code of Student Conduct and at he following link: http://www.nicholls.edu/documents/student_life/code_of_conduct.pdf . CONTINUED LEARNING FOLLOWING AN EXTREME EMERGENCY: In order to make continued learning possible following an extreme emergency, students are responsible for: reading regular emergency notifications on the NSU website; knowing their Blackboard (or designated system) student login and password; knowing how to use and access Blackboard (or university designated electronic delivery system); being familiar with emergency guidelines; evacuating textbooks and other course materials; contacting faculty regarding their intentions for completing the course. Faculty are responsible for: their development in the use of the Blackboard (or designated) software; having a plan for continuing their courses using only Blackboard and email; continuing their course in whatever way suits the completion of the course best, and being creative in the continuation of these courses; making adjustments or compensations to a student's progress in special programs with labs, clinical sequences or the like only in the immediate semester following the emergency. CLASS DISRUPTIONS: The use of cellular phones, pagers or any other electronic personal devices is prohibited in class. Any infractions will result in class being dismissed and experiments considered over. This includes but not limited to using your phone as timer—get a watch or I will supply stopwatches if needed, going to the hallway while a experiment is ongoing to check on texts. texting or calling or receiving incoming calls or texts receiving alerts regarding incoming texts or calls 5 using phone as alarm system. Note: This is not a binding contract. This syllabus is subject to change throughout the course. 6