8A2009lecture12

8A2009lecture12 - Last time A d d i ti o n r e a c ti o n s...

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Lecture 13 Organic Chemistry Brief 8A Last time… -Addition reactions to alkenes and alkynes…. Alkenes HX Alkyl halide alcohol H 2 O/H + ROH/H+ ether H 2 alkane Alkyne 2 HX Pt/C H 2 Pt/C H 2 Lindlar Cat. alkene H 2 O/H + ketone Synthesis -Organic Reactions are important to allow to make things-- Such as drugs, cosmetics, plastics…. . --Alkenes and Alkynes are great starting materials for chemists to make new molecules-- can convert to alkyl halide, etc, and then do reactions to make larger molecules. --Nature also does a complex synthesis to support life --What are nature’s building blocks??
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alkyne to make the alkyl bromide shown at the right?? A. 2 Equivalents of HBr B. Excess H 2 /Pt/C, followed by HBr C. H 2 /Lindlar’s catalyst, followed by 1 eq HBr D. H 2 SO 4 , followed by 1 eq of HBr RCHCH 3 Br Polymers: large molecules made of repeating units xA-B -ABABABABABABABABABA- Or (AB) x X = lots, like ~10 6 Polyethylene: CH 2 CH 2 CH 2
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8A2009lecture12 - Last time A d d i ti o n r e a c ti o n s...

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