Alcohol functional group update#
Alcohol functional group download#

Alcohol functional group download#

You can download the updated version using the button below. Additionally, I’ve made it so that the colour circles around each functional group actually have some significance, rather than just being arbitrary.

Alcohol functional group update#

UPDATE JULY 2014 I’ve updated the design of this graphic to include a few more functional groups and also make the design clearer. I’ve also produced three teaching versions of an earlier version of this graphic ( 1, 2 & 3) with varying amounts of information blanked out to allow pupils to fill them in.Įdit: updated to add in explanation of what R and X stand for in the various formulae. More complicated chemical molecules may contain more than one functional group within their structure, which can sometimes affect the chemical reactions they undergo. The names of organic molecules are systematic references to the functional groups within the molecule, and can thus be used to identify these. It’s nothing ground-breaking, but hopefully other teachers will find it useful.Ī functional group in chemistry is the part of the molecule that gives it its particular reactivity simple molecules that contain the same functional group in their structure can be expected to react in similar ways. The idea for this was to present the various organic compounds that pupils need to learn at A level in a straightforward manner, simply with the formulae, name, and a naming example of each. Therefore, the proposed name cannot be used.Today’s graphic is a little more basic, but is something that I’m hoping to eventually develop into an organic reaction map. The correct name for this compound is pent-2-en-2-ol (the following structure diagram shows the 2⁠ Z isomer).Īnyway, the proposed name 2-hydroxypent-2-ene as well as the conforming name pent-2-en-2-ol do not describe the structure that is shown in the question (note the position of the double bond). Hence, this nonconforming name could still be understood. Nevertheless, this name is unambiguous it describes only one compound (ignoring cis/ trans isomerism). The alternative name 2-hydroxypent-2-ene that is proposed in the question is not in accordance with current or past IUPAC recommendations therefore, it should not be used. Hence, the proposed name could be understood.

However, the very similar name 3-penten-2-ol (note the elision of the ‘e’) was in accordance with the obsolete 1979 IUPAC recommendations. The first name 3-pentene-2-ol that is proposed in the question is not in accordance with current IUPAC recommendations. deviations from the rules for the priority of suffixes, numbering of locants, or order of citation in the name) do not necessarily lead to wrong structures. Other names that are in accordance current IUPAC recommendations and also many names that were generated according to earlier recommendations may be used in general nomenclature.įurthermore, the IUPAC nomenclature is quite robust. The PIN for the compound that is given in the question is (3⁠ E)-pent-3-en-2-ol. Therefore, the current version of Nomenclature of Organic Chemistry – IUPAC Recommendations and Preferred Names 2013 (Blue Book) include the definition of a preferred IUPAC name (PIN), which is the name preferred among two or more names generated from two or more IUPAC recommendations including the many retained names. Generally, since many compounds can have two or more names in accordance with several methods recommended by IUPAC, a compound may be named correctly in more ways than one.