PDF herunterladen
Synthesis 1990; 1990(7): 583-584
DOI: 10.1055/s-1990-26947
paper
© Georg Thieme Verlag, Rüdigerstr. 14, 70469 Stuttgart, Germany. All rights reserved. This journal, including all individual contributions and illustrations published therein, is legally protected by copyright for the duration of the copyright period. Any use, exploitation or commercialization outside the narrow limits set by copyright legislation, without the publisher's consent, is illegal and liable to criminal prosecution. This applies in particular to photostat reproduction, copying, cyclostyling, mimeographing or duplication of any kind, translating, preparation of microfilms, and electronic data processing and storage.

2,3-Dihydro-1,4-dioxin in Organic Chemistry. Part X.1 A new Synthesis of 3-Hydroxy-3-cyclobutene-1,2-dione (Semisquaric acid)

Marcel Fétizon* , Issam Hanna
  • *Laboratoire de Synthèse Organique, Ecole Polytechnique, F-91128 Palaiseau Cedex, France
Weitere Informationen

Publikationsverlauf

Publikationsdatum:
17. September 2002 (online)

  als PDF herunterladen  Lizenzen und Reprints Alle Artikel dieser Rubrik

Cycloaddition of 2,3-dihydro-1,4-dioxin (1) to 1,1-dichloroketene, generated from zinc and trichloroacetyl chloride by sonication, leads to 7,7-dichloro-2,5-dioxabicyclo[4.2.0]octan-8-one (2) which upon acid hydrolysis affords semisquaric acid (3-hydroxy-3-cyclobutene-1,2-dione, 3).