Size‐Induced Inversion of Selectivity in the Acylation of 1,2‐Diols

Abstract: Relative rates for the Lewis base‐catalyzed acylation of aryl‐substituted 1,2‐diols with anhydrides differing in size have been determined by turnover‐limited competition experiments and absolute kinetics measurements. Depending on the structure of the anhydride reagent, the secondary hydroxyl group of the 1,2‐diol reacts faster than the primary one. This preference towards the secondary hydroxyl group is boosted in the second acylation step from the monoesters to the diester through size and additional steric effects. In absolute terms the first acylation step is found to be up to 35 times faster than the second one for the primary alcohols due to neighboring group effects.

Standort
Deutsche Nationalbibliothek Frankfurt am Main
Umfang
Online-Ressource
Sprache
Englisch

Erschienen in
Size‐Induced Inversion of Selectivity in the Acylation of 1,2‐Diols ; day:29 ; month:11 ; year:2021 ; extent:1
Chemistry - a European journal ; (29.11.2021) (gesamt 1)

Urheber
Mayr, Stefanie
Zipse, Hendrik

DOI
10.1002/chem.202101905
URN
urn:nbn:de:101:1-2021113014030619841703
Rechteinformation
Open Access; Der Zugriff auf das Objekt ist unbeschränkt möglich.
Letzte Aktualisierung
15.08.2025, 07:33 MESZ

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Beteiligte

  • Mayr, Stefanie
  • Zipse, Hendrik

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