UH CHEM 3331 - Hydrocarbons. Alkanes introduction (4 pages)

Previewing page 1 of 4 page document View the full content.
View Full Document

Hydrocarbons. Alkanes introduction



Previewing page 1 of actual document.

View the full content.
View Full Document
View Full Document

Hydrocarbons. Alkanes introduction

159 views


Lecture number:
5
Pages:
4
Type:
Lecture Note
School:
University of Houston
Course:
Chem 3331 - Organic Chemistry
Edition:
1
Documents in this Packet

Unformatted text preview:

CHEM 3331 1nd Edition Lecture 5 Outline of Last Lecture I Polarity of molecules II Supramolecular interactions III Solubility IV Classes of organic compounds Outline of Current Lecture I Review of hydrocarbons II Nomenclature III Physical properties IV Uses and sources of alkanes V Reactions of alkanes Current Lecture I Review of Hydrocarbons Hydrocarbons consist of subclasses Alkanes alkenes alkynes and aromatics Alkanes are saturated hydrocarbons this means they have toe absolute maximum hydrogens bonded to each carbon Alkenes alkynes and aromatics are unsaturated hydrocarbons because they possess double and triple bonds Homologous series H CH2 H H CH2 2 H H CH2 3 H Can also be written as CH2 nH2 The general formula is CnH2n 2 this applies regardless of branching or not II Nomenclature Traditional nomenclature bottom names Modern systematic nomenclature top names These notes represent a detailed interpretation of the professor s lecture GradeBuddy is best used as a supplement to your own notes not as a substitute IUPAC came up with a set of rules to give unambiguous name to alkanes 1 Find the longest chain of uninterrupted carbons called the main chain What is not part of the main chain is called a substituent 2 The main chain with the most substituents is the correct one if a compound has 2 or more possibilities for a main chain 3 Number main chain from side closest to first substituent 4 Name and number substituents CH3 methyl CH3CH2CH2 propyl 5 If you have multiple substituents order them alphabetically If you hae more than one substituent of the same kind put them together For example The main chain is 7 carbons long heptane We have 3 methyl substituents and one ethyl subtituent The methyls are found on carbons 2 3 and 5 The ethyl is also found on 5 Therefore we name this compound 5 ethyl 2 3 5 trimethyl heptane Naming complex substituents the carbon that connects to the main chain is called carbon 1 We find the longest chain and name it and take the



View Full Document

Access the best Study Guides, Lecture Notes and Practice Exams

Loading Unlocking...
Login

Join to view Hydrocarbons. Alkanes introduction and access 3M+ class-specific study document.

or
We will never post anything without your permission.
Don't have an account?
Sign Up

Join to view Hydrocarbons. Alkanes introduction and access 3M+ class-specific study document.

or

By creating an account you agree to our Privacy Policy and Terms Of Use

Already a member?