lect21 - group transformation one functional group is...

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CH 310M/318M – TTh 8am – Lecture 21 – Tu 4/10/2007 Graded Homework : HW#16 has been posted. Deadline = Thu 4/12 @ 3:00 p.m. HW#17 has been posted. Deadline = Mon 4/16 @ 3:00 p.m. Reading Assignment : Sections 8.6 & 8.8 (we won’t cover Section 8.7) Textbook Problems : 8.8, 8.9, 8.12 through 8.18, 8.20, 8.21 Last Time : Preparation of alkynes Electrophilic addition reactions of alkynes Today : A few more alkyne reactions Synthesis problems in organic chemistry (end Chapter 7) Alkyl halides (begin Chapter 8) Midterm Exam #3 is scheduled for Thursday, 4/19 from 7:00 to 9:00 p.m. All material covered through the end of lecture on Thursday, 4/12 will be fair game for this exam. More information to come on Thursday…
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There are 3 types of operations involved in organic synthesis: Functional group transformations Most of the reactions you have learned at this stage are examples of a functional
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Unformatted text preview: group transformation one functional group is converted into another functional group during the course of the reaction Control of stereochemistry If a particular stereoisomer of the target is desired, use of stereoselective reactions will be necessary during the course of the synthesis. Several of the reactions you have learned thus far allow for stereochemical control (syn addition vs. anti addition) Formation of CC bonds Since the goal of organic synthesis (in the real world, at least) , is to build up complex target compounds from simple (and inexpensive) starting materials, reactions that form carboncarbon bonds are typically of tremendous importance in synthesis. At this stage you only know one reaction that leads to formation of a new CC bond alkylation of an acetylide ion by treatment with a methyl or 1alkyl halide....
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This note was uploaded on 07/16/2008 for the course CH 310M taught by Professor Iverson during the Spring '05 term at University of Texas at Austin.

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lect21 - group transformation one functional group is...

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