CHEM 634 Advanced Organic Chemistry – Synthesis and Reactivity Fall 2014 Instructor: Mary Watson (237 BRL, 831-1529, mpwatson@udel.edu) Office Hours: 10:30am–12noon, Wednesdays Lectures: 2–3:15 pm, Tu/Th, 305 ISE Lab Lectures will be recorded and available online through UD Capture. Please see the course website for a link to the UD Capture videos. Lecture notes will be posted on the course website shortly before or directly after lecture. Website: http://www.udel.edu/chem/mpwatson/mpwatson/Chem_634.html The website will be updated regularly. Please check it for announcements, lecture notes, problem sets, answer keys, etc. Textbooks: “What I cannot create, I do not understand.” Richard Feynman “It is in our genes to understand the universe if we can, to keep trying if we cannot, and to be enchanted by the act of learning all the way.” Lewis Thomas All texts are On Reserve in the Chemistry Library. Required Strategic Applications of Named Reactions in Organic Synthesis. Kurti, L.; Czako, B. Advanced Organic Chemistry, Part B: Reactions and Synthesis. Carey, F. A.; Sundberg, R. J. Classics in Stereoselective Synthesis. Carreira, E. M.; Kvaerno, L. The Art of Writing Reasonable Organic Reaction Mechanisms. Grossman, R. B. Recommended Advanced Organic Chemistry, Part A: Structure and Mechanisms. Carey, F. A.; Sundberg, R. J. th March’s Advanced Organic Chemistry: Reactions, Mechanisms, and Structure, 6 Edition. Smith, M. B.; March, J. On Reserve in the Chemistry Library Comprehensive Organic Transformations: A Guide to Functional Group Preparations, 2nd Edition Larock, R. C. Stereochemistry of Organic Compounds Eliel, E.; Wilel, S. H. Protective Groups in Organic Synthesis, 4th Ed, Greene and Wuts Transition Metals in the Synthesis if Complex Organic Molecules, 3rd Ed, Hegedus, L. S. The Logic of Chemical Synthesis, Corey, E. J.; Cheng, X. Other Tools: Molecular model kit (required & allowed on exams) You may use any brand. Here are some recommendations: HGS 4010/Student Set – Expensive but very nice (they are a smaller set of the same models I use – I like them because they are pretty rigid. Be warned, however, they tend to be fragile). http://www.maruzen.info/hgs/catalog/product_info.php?cPath=11&products_id=596 Darling Models – Cheaper, but very floppy (which is not great for studying stereochemistry). http://www.darlingmodels.com/item--KIT-1-ISBN-0-9648837-1-6-Plastic-Box-Organic-Inorganic-Organometallic-kit_1_plastic_student.html Grades: Midterm 1 (10/2) Midterm 2 (11/11) Presentation (11/22) Problem Sets Final Exam (TBA) Total 200 points 200 points 150 points 150 points 300 points 1000 points Presentations: You will present on a recently developed synthetic organic method to the class on Saturday, Nov 22, 9am–12noon. You must choose a paper from the list posted next to Mary’s office door by Oct 16. Instructions for your presentation will be available shortly. Midterms and Final: Closed note, closed book tests. You may use your molecular model kit. Exams will cover lecture material, problem sets, assigned reading, and current literature discussed in class. Problem Sets: There will be 5 problem sets. They will total 30 points each. In most cases, only representative problems, not the entire problem set, will be graded. A key will be posted for each problem set. It is your responsibility to make sure you understand the correct answers once the key is posted. You may work in study groups when working on the problem sets, but each student must turn in his/her own work. Each problem set will include questions from Grossman’s Art of Writing Organic Reaction Mechanisms book. You are responsible for all material in this book; it will be included on the midterms and final exam. Do not use Reaxys, SciFinder Scholar or consult the literature to find the answers, unless specifically directed to do so. Problem sets are due at the beginning of class on the due date. Late problem sets will not be accepted as we may discuss the answers in class after they are due. For problem sets, you will occasionally be asked to design synthetic routes to target compounds starting with commercially available materials. For this class, limit these commercially available materials to those available from Acros, Aldrich, Fisher, Strem, Alfa-Aesar, or TCI. Regrade Requests: All regrade requests must be submitted in writing by the beginning of the next lecture after the tests are returned. The entire exam will be regraded. If grading errors are found, the revised grade may be higher or lower than the original score. If submitting a regrade request, do not change your test in any way; exams may be photocopied before being returned. Academic Dishonesty: Do not plagiarize or cheat. Any student who commits academic dishonesty will be punished according to the University of Delaware’s guidelines (http://www.udel.edu/stuguide/0910/code.html#honesty). CHEM 634 Course Learning Goals After successful completion of this course, a student should be able to: 1. Understand principles of retrosynthesis and be able to splan synthetic routes to complex organic molecules (1,2) 2. Understand absolute and relative molecular stereochemistry and its importance in synthetic chemistry (1) 3. Understand the use, installation and removal of protecting groups in organic synthesis (1) 4. Be familiar with the methods and reactivity associated with alkyl groups, carbonyl groups, enolates, alkenes, alkynes, amines, amides, esters, ethers, aromatic rings, and strained rings (1) 5. Be familiar with nucleophilic substitution chemistry, radical chemistry, methods for oxidation and reduction, elementary organometallic chemistry, pericyclic reactivity, asymmetric catalysis, and functional group interconversion, as they pertain to organic synthesis (1) 6. Be familiar with uses and application of major electronic databases used in organic chemistry (3,5) 7. Be familiar with major journals and publications pertaining to synthetic organic chemistry (3,5) 8. Organize and review chemical literature in a topic area and present in clear and concise oral format (3,4,10) (*Numbers in parentheses indicate the departmental learning goals with which each course goal is aligned. Please see: http://www.udel.edu/chem/goals.html.) Proposed Course Outline and Readings Date 8/26 Lecture 1 8/28 2 9/2 9/4 9/9 3 4 5 9/11 9/16 6 7 Carboxylates Protecting Groups Electronic Databases and Searching the Literature Aromatic Substitution Transition Metal Catalysis 9/18 9/23 (DAW) 9/25 9/30 (DAW) 10/2 (DAW) 10/7 10/9 10/14 10/16 10/21 (DAW) 10/23 (DAW?) 10/28 10/30 11/4 8 9 Transition Metal Catalysis Alcohol/Ketone Oxidation 10 11 C=X Reduction Enolates 11/6 11/11 (DAW) 11/13 11/18 (DAW) 11/20 Sat, 11/22 9am12noon 11/25 11/27 12/2 Topic Introduction, Retrosynthetic Analysis, Arrow Pushing Nucleophilic Substitution Notes Problem Set 1 due Meet in 221 BRL Reading Grossman Ch 1 Corey Ch 1–6 (handout) CS-B 3.1–3.2 Grossman Ch 2 CS-B 3.4 CS-B 3.5 Handout CS-B 11.1–11.2, Grossman Ch 2 Heg Ch 1–2 (handout), CS-B 7.1, 8.2–8.3, 11.3, Grossman Ch 6 Problem Set 2 due CS-B 12.1, 12.5, 12.7 CS-B 5.3, 5.6, 5.7, 3.5 (CK 2) CS-B 1 Midterm 1 12 13 14 15 16 Enolates Aldol Reactions Aldol Reactions Alkene Synthesis Alkene Oxidation 17 Alkyne Synthesis 18 19 No class – Election Day 20 Midterm 2 C=C Reduction Radical Chemistry 21 22 Pericyclic Reactions Pericyclic Reactions 23 Presentati ons Pericyclic Reactions 24 No class – Thanksgivi ng 25 Special Topics Radical Chemistry Special Topics CS-B 2 (CK 4, 5) Problem Set 3 due CS-B 2.4, 4, 5.1, 5.6 (CK 7,8,9) CS-B 10.3, CS-A 11, Grossman Ch 5 Problem Set 4 due CS-B 6 (CK 16, 17,18), Grossman Ch 4 Problem Set 5 due CS = Carey and Sundberg; CK = Carreira and Kvaerno; Heg = Hegedus and Soderberg; () = optional reading