Sustainable gold catalysis: synthesis of new spiroacetals

Abstract: Various [O,O]- and [N,O]-spiroacetals were synthesized by gold-catalyzed spirocyclization of suitable functionalized alkynes. Whereas simple spiroacetals with two heteroatoms were readily obtained by regioselective cyclization of acetylenic diols or aminoalcohols, hitherto unknown spirocyclic isoxazolidines and pyrazolidines bearing three heteroatoms were formed by three-component coupling of alkynols, aldehydes, and protected hydroxylamine or hydrazine derivatives. The sustainability of these spirocyclizations was improved by using recyclable gold catalysts in water or nanomicelles as reaction medium.

Location
Deutsche Nationalbibliothek Frankfurt am Main
Extent
Online-Ressource
Language
Englisch

Bibliographic citation
Sustainable gold catalysis: synthesis of new spiroacetals ; volume:88 ; number:4 ; year:2016 ; pages:391-399 ; extent:9
Pure and applied chemistry ; 88, Heft 4 (2016), 391-399 (gesamt 9)

Creator
Wagner, Bernd
Belger, Katrin
Minkler, Stefan
Belting, Volker
Krause, Norbert

DOI
10.1515/pac-2016-0406
URN
urn:nbn:de:101:1-2024030513434122245173
Rights
Open Access; Der Zugriff auf das Objekt ist unbeschränkt möglich.
Last update
14.08.2025, 10:44 AM CEST

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Associated

  • Wagner, Bernd
  • Belger, Katrin
  • Minkler, Stefan
  • Belting, Volker
  • Krause, Norbert

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