Definitions for acetal
ˈæs ɪˌtælac·etal

Princeton's WordNetRate this definition:0.0 / 0 votes

1. acetalnoun

   any organic compound formed by adding alcohol molecules to aldehyde molecules

WiktionaryRate this definition:0.0 / 0 votes

1. acetalnoun

   Any diether of a geminal diol, RC(OR') (where R' does not = H).

2. Etymology: From acetic + alcohol.

ChatGPTRate this definition:0.0 / 0 votes

1. acetal

   An acetal is a functional group in organic chemistry that includes two alkoxy groups, or -OR groups, attached to the same carbon atom. Acetals are typically formed by the reaction of an alcohol with an aldehyde or a ketone. They are commonly used as protecting groups for aldehydes and ketones due to their stability under a wide range of reaction conditions.

Webster DictionaryRate this definition:2.5 / 2 votes

1. Acetalnoun

   a limpid, colorless, inflammable liquid from the slow oxidation of alcohol under the influence of platinum black

2. Etymology: [Acetic + alcohol.]

WikidataRate this definition:4.0 / 1 vote

1. Acetal

   An acetal is a functional group with the following connectivity RC(OR')2, where R, R' are organic fragments. They are saturated and tetrahedral. The two R'O groups can be equivalent or not. Acetals are formed from and convertible to aldehydes. The related functional group, ketals, are correspondingly obtained from and convertible to ketones. Cellulose is a ubiquitous example of an acetal. Formation of an acetal occurs when the hydroxyl group of a hemiacetal becomes protonated and is lost as water. The carbocation ion that is produced is then rapidly attacked by a molecule of alcohol. Loss of the proton from the attached alcohol gives the acetal. Acetals are stable compared to hemiacetals but their formation is a reversible equilibrium as with esters. As a reaction to create an acetal proceeds, water must be removed from the reaction mixture, for example, with a Dean-Stark apparatus, lest it will hydrolyse the product back to the hemiacetal. The formation of acetals reduces the total number of molecules present and therefore is not favourable with regards to entropy. A way to improve this is to use an orthoester as a source of alcohol. Aldehydes and ketones undergo a process called acetal exchange with orthoesters to give acetals. Water produced along with the acetal product is used up in hydrolysing the orthoester and producing more alcohol to be used in the reaction.

Matched Categories

1. • Organic Compound

Usage in printed sourcesFrom: 

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How to pronounce acetal?

1. Alex

   US English

   David

   US English

   Mark

   US English

   Daniel

   British

   Libby

   British

   Mia

   British

   Karen

   Australian

   Hayley

   Australian

   Natasha

   Australian

   Veena

   Indian

   Priya

   Indian

   Neerja

   Indian

   Zira

   US English

   Oliver

   British

   Wendy

   British

   Fred

   US English

   Tessa

   South African

How to say acetal in sign language?

Numerology

1. Chaldean Numerology

   The numerical value of acetal in Chaldean Numerology is: 8

2. Pythagorean Numerology

   The numerical value of acetal in Pythagorean Numerology is: 6

Popularity rank by frequency of use

References

1. ^ Princeton's WordNet
   http://wordnetweb.princeton.edu/perl/webwn?s=acetal
2. ^ Wiktionary
   https://en.wiktionary.org/wiki/Acetal
3. ^ ChatGPT
   https://chat.openai.com
4. ^ Webster Dictionary
   https://www.merriam-webster.com/dictionary/acetal
5. ^ Wikidata
   https://www.wikidata.org/w/index.php?search=acetal
6. ^ Usage in printed sources
   https://books.google.com/ngrams/graph?content=acetal