Ortho acid

Ortho acids are hypothetical organic compounds having the structure RC(OH)3 (R=alkyl or aryl).[1]

Ortho acids themselves are unstable and cannot be isolated. However orthoesters can be synthesized by the Pinner reaction, in which nitriles react with alcohols under acid catalysis:

RCN + 3 R′OH → RC(OR′)3 + NH3

Historic definition

Historically the prefixes “hypo-”, “per-”, “ortho-”, “meta-”, and “pyro-” were used to distinguish between different oxyacids of the same element, of these ortho acid is the most highly oxidised or hydroxylated. For example dehydration of orthoperiodic acid gives metaperiodic acid. Such naming conventions are now obsolete, however various traditional names containing these prefixes have been retained in IUPAC nomenclature (e.g. orthosilicic acid (Si(OH)4), orthotelluric acid (Te(OH)6) and orthophosphoric acid (PO(OH3)).

gollark: Haven't we all?
gollark: I am not in any way selling or assisting in selling pizza and I DO NOT work for pizza companies in any form. This is NOT true. I have not in any way been sponsored by pizza companies. There have been no advertising agreements whatsoever with any companies producing pizza or otherwise to have me subliminally advertise pizza, as my profile picture is not a pizza. Since it is not a pizza, this is obviously not pizza advertisement whatsoever. No monetary exchanges or otherwise have occurred with companies engaged in pizza production for any reason relating to my profile picture. It's not pizza. There were no deals, under-the-table or otherwise, with pizza companies. No pizza companies pay for any kind of advertising involving me. I'm DEFINITELY not paid by pizza companies to do ANY pizza advertising or sales.
gollark: It is not pizza.
gollark: What? GTech™ cares about your privacy. ABR probably isn't logging all your messages.
gollark: The rate limits on Minetest's IRC logs are irritating. I only have 3 years retrieved after *hours*.

References
  1. IUPAC, Compendium of Chemical Terminology, 2nd ed. (the "Gold Book") (1997). Online corrected version:  (2006–) "ortho acids". doi:10.1351/goldbook.O04331


This article is issued from Wikipedia. The text is licensed under Creative Commons - Attribution - Sharealike. Additional terms may apply for the media files.