Test1new key_223_07

Test1new key_223_07 - Test I Chemistry 223 Fall 2007 (51)...

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Test I Name___________ _Key _________________ Chemistry 223 Fall 2007 September 19, 2007 (51) 1. Write the major products or reactants of the reactions below. a. MgBr Mg, ether 1) O=CHCH 3 2) H 3 O + O 1) 2) H 3 O + PCC Br OH O H CHCH 3 OH b. OH OH K 2 Cr 2 O 2 /H 2 SO 4 PDC OH O O O O H c. H Cl NaSCH 3 CH 3 OH SCH 3 H H 2 SO 4 OH /heat d.
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2 2 e. H 3 CO H O O 1. LiAlH 4 ,Et 2 O 2. H 3 O + 1. NaBH 4 ,EtOH 2. H 3 O + H 3 CO CH 2 O OH H 2 C CH 2 OH OH f. PBr 3 OH Br g. OH H 3CO NaH I o - Na + H 3 CO OCH 2 CH 3 H 3 CO OCH 3 1) B 2 H 6 2)H 2 O 2 /NaOH Na 2 Cr 2 O 3 /H 2 SO 4 OCH 3 OH OCH 3 OH O h. e. Cl OH NaOH Na + - OCH 2 CH 3 CH 3 CH 2 OH O OCH 3 OH (16) 2. a) Explain why the synthetic reaction shown below would be unsuccessful. Ans: One of the limitations of grignard is to avoid working in presence of an acidic proton because it will react with the grignard reagent and yield an alkane. b) What would be the right products?
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3 3 O OH CH 3 MgBr + O OH 1) ether 2) H 3 O + + CH 4 c) Show mechanism with pushing arrows. O
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This homework help was uploaded on 04/08/2008 for the course CHEM 223 taught by Professor Chahoua during the Fall '07 term at Wake Forest.

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Test1new key_223_07 - Test I Chemistry 223 Fall 2007 (51)...

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