CHM 1321 Lecture Notes - Methyl Group, Decane, Ethyl Group

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CHM 1321 Full Course Notes

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Converting an organic name to a structure is relatively easy. Work from the back of the name towards the front. First, identify the longest chain and principle functional group. Add numbers to the main chain, then attach the various substituents. The secret is working from the back of the name. This is a simple structure that contains no substituents. Start with the prefix of the main chain. This prefix indicates that there are nine carbons in the chain. Use the suffix to identify the functional group. The suffix is ane showing that only sp3 carbons are present. From this name we know that there are 10 carbons in the chain (dec) and no functional groups (ane). Number the carbon chain so you know where to attach substituents. The name indicates there is a two-carbon group (ethyl) at position 7, two one-carbon groups (dimethyl) at positions 3 and 6, and a three-carbon-group (propyl) at position 4.

Related Questions

QUESTION 1

In naming branched alkanes, we name alkane branches of different names in _________ order.

	a.	alphabetical
	b.	numeric
	c.	size
	d.	none

QUESTION 2

A 10 carbon hydrocarbon with a 1 carbon group at the 2nd and 4th carbons, a 3 carbon group at the 5th carbon and a 2 carbon group at the 4th carbon would be named ______________.

	a.	5-propyl-4-ethyl-2,4-dimethyldecane
	b.	4-ethyl-2,4-dimethyl-5-propyldecane
	c.	none
	d.	2,4-dimethyl-4-ethyl-5-propyldecane

QUESTION 3

In naming alkanes, the longest chain is named using a prefix and the suffix _________.

	a.	none
	b.	-yl
	c.	-ane
	d.	-ate

QUESTION 4

In naming branched alkanes, the ___________ chain is given the name of the corresponding n-alkane.

	a.	main
	b.	side
	c.	none
	d.	first

QUESTION 5

In drawing structures from a name, the first step is to ___________.

	a.	draw the carbon skeleton
	b.	add the hydrogens
	c.	none
	d.	draw the branch skeletons

QUESTION 6

In naming branched alkanes, we use __________ to separate the name of the branch from its number.

	a.	an apostrophe
	b.	none
	c.	a dash
	d.	a comma

QUESTION 7

Alkanes are classified as ________ hydrocarbons.

	a.	unsaturated
	b.	transsaturated
	c.	saturated
	d.	none

QUESTION 8

The prefix but- refers to a hydrocarbon with __________ carbons.

	a.	three
	b.	two
	c.	four
	d.	one

QUESTION 9

Alkanes fall into two classifications, __________ alkanes and branched alkanes.

	a.	none
	b.	neat
	c.	normal
	d.	linear

QUESTION 10

The prefix hex- refers to a hydrocarbon with _________ carbons.

	a.	eight
	b.	four
	c.	two
	d.	six

PLEASE CHECK MY ANSWERS

Type the name of the functional group(s) in the given blanks, my personal answers are bolded

This molecule contains alcohol and ether groups, the alcohol group gets priority in the IUPAC name.

Part 2:

The main chain will contain ["five", "six", "seven", "eight", "nine", "ten", "other"] carbons and the base alkane name will be ["cyclopentane", "cyclohexane", "cycloheptane", "cyclooctane", "cyclononane", "cyclodecane", "other"] and the the suffix ["-alcohol", "-ether", "-ane", "-ol", "other"] will be added.

The chain is numbered ["left to right", "right to left", "clockwise", "counterclockwise", "symmetrical"]

There is stereochemistry that must be included in the full IUPAC name. ["Yes, stereochemistry is present and must be in the name", "no, stereochemistry is not present", "no, stereochemistry is present but cannot be assigned", "no, assignable stereochemistry is present but not required in the name"]

Part 3

What is the proper IUPAC name for the above compound. Please use proper spelling, formatting, spacing,and punctuation.

(1R,3R)-3-Propoxy-cyclohexanol

CHM 1321 Lecture Notes - Methyl Group, Decane, Ethyl Group

CHM 1321 Full Course Notes

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