7900

Chemistry Organic Chemistry Level: Misc Level

Grignard reagents are not the only carbon nucleophiles.Recall the SN2 reactivity of the conjugate base of a terminal alkyne(see Exercise 4 in Lesson 8).Draw structures for the products in the following sequence;




7899

Chemistry Organic Chemistry Level: Misc Level

Draw complete structures for;

a)1,1,1-trichloro-5,5-dimethyl-2-octanone

(b) Z-2,3-dichloropropenal




7898

Chemistry Organic Chemistry Level: Misc Level

Provide IUPAC names (absolute configuration, too!) for; CH3O, CH2CH3CH2OCl




7897

Chemistry Organic Chemistry Level: Misc Level

Complete the reaction scheme below by placing one organic structure in each box;




7896

Chemistry Organic Chemistry Level: Misc Level

Write out three balanced equations that represent a complete mechanism for the following overall reaction then label each step'' B/L''or''SN2''as appropriate.(Hint1; Your three equations should add up to the overall equation.Hint2;Sulfur is an excellent SN2 nucleophile.)




7895

Chemistry Organic Chemistry Level: Misc Level

Label the B/L acids and bases in the following;




7894

Chemistry Organic Chemistry Level: Misc Level

Generally, lower molecular weight alcohols that have been exposed to moist air are not pure.Explain why, in one or two sentences, using molecular terms.




7893

Chemistry Organic Chemistry Level: Misc Level

Provide IUPAC names (absolute configuration, too!) for;C6H9O and C4H10O




7892

Chemistry Organic Chemistry Level: Misc Level

Draw complete structures for;

(a) isopropyl propyl ether

(b) 3,5-dimethoxyphenol




7891

Mathematics Probability Level: Misc Level

A Committee consists of 8 married couples. In how many ways can a subcommittee of 5 be chosen so that at most one married couple belongs to the subcommittee?




7890

Mathematics Probability Level: Misc Level

Some boys come into a room and sit in a circle, 4 girls arrange themselves between 2 boys.The 4 girls sit all together.If 2880 different circles can be formed, how many boys are there?




7889

Chemistry Organic Chemistry Level: Misc Level

When methyl benzoate is added to the sulfuric acid, the carbonyl group is protonated. From this, determine where the benzene ring will be nitrated (it will only be nitrated once).




7888

Chemistry Inorganic Chemistry Level: Misc Level

The nitronium ion,NO2+,is produced when nitric acid is mixed with sulfuric acid. Write a balanced equation for this reaction.




7885

Chemistry Organic Chemistry Level: Misc Level

Cellulose (shown below ) is also esterified with acetic anhydride to give a useful polymer, cellulose acetate acetate.Write the structure of a 3- link segment of this polymer chain.




7884

Chemistry Organic Chemistry Level: Misc Level

If 10.2 g of acetic anhydride had been used, what would be the theoretical yield?


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