7993

Chemistry Organic Chemistry Level: Misc Level

There is only one oxime formed from 3-pentanone.However, 2-pentanone forms two diastereomeric oximes. Draw their structures.


7992

Chemistry Organic Chemistry Level: Misc Level

Show all the steps and all the reagents needed to transform formaldehyde into 4-propyl-4-heptanol.


7991

Chemistry Organic Chemistry Level: Misc Level

With acid-catalysis, one mole of cis-1,2-cyclopentadiol readily forms an acetal with formaldehyde whereas one mole of trans-1,2-cyclopentadiol does not.Explain with the aid of structural formulas.


7990

Chemistry Organic Chemistry Level: Misc Level

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


7989

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


7988

Chemistry Organic Chemistry Level: Misc Level

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


7937

Chemistry Organic Chemistry Level: Misc Level

This question requires you to make a prediction based on what your model reveals. To help with this question, insert your course CD and click on L4Q4. mov.You may also access this file via the course Web site, by clicking on Lesson Hints, then Lesson 4, Question 4. Make a model of and examine both conformations by chair-to chair flipping.

(a) Make drawing of the two possible chair conformations.

(b) Which chair conformation is more stable?What general rule is being violated here?Explain your reasoning in one or two sentences.

(c) Draw the most stable chair conformation of see your course schedule for submission options for this assignment.


7936

Chemistry Organic Chemistry Level: Misc Level

Write IUPAC names (stereochemistry if appropriaate!) for each of the following

a) C7H14   b) C2H16   c) C2H6Cl3Br   d)C7H12


7935

Chemistry Organic Chemistry Level: Misc Level

Draw complete structural formulas for each of the following;

(a)4-bromo-3-methy-1-pentene

(b)5,5-diethyl cycloheptene


7933

Chemistry Organic Chemistry Level: Misc Level

Draw complete structures for;

(a) E-2,3-dimethyl-2-pentenamine

(b)Tetrapheny ammonium iodide


7932

Chemistry Organic Chemistry Level: Misc Level

Complete the following partial structures for;

(a)trans-4-ethylcyclohexanamine

(b) (S) -N-methyl-2- butanamine

(c) methyl 2-aminopropanoate

(d) (R)-methylethylphenyl ammonium chloride


7931

Chemistry Organic Chemistry Level: Misc Level

Provide acceptable names for the following;

a) CH3CH2CH2CHNH2CH2CH3   b)CH3CH2NH2    c)CH3CH2CH2N(CH2CH3)2

d) CHCH2CH2NH2CH3Cl

 


7926

Chemistry Organic Chemistry Level: Misc Level

How many chiral carbons does 2,4-dimethy pentane have?

zero

1

2

3


7925

Chemistry Organic Chemistry Level: Misc Level

What is true about a meso compound?

Your answer;

It is optically inactive.

It is optically active.

It has an internal mirror plane.

1 and 3


7924

Chemistry Organic Chemistry Level: Misc Level

In comparing cis-1,2-dibromocyclohexane and trans-1,2-dibromocyclohexane,

The two are enantionmers.

The cis isomer is chiral, but the trans isomer is achiral.

The trans isomer is chiral, but the cis isomer is achiral.

The two are superimposable.


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