PDF herunterladen
Synlett 1999; 1999(5): 579-580
DOI: 10.1055/s-1999-2687
letter
© 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.

Novel Synthesis of Exo-Benzocycloheptene-1,5-diones Utilizing Base-Mediated Tandem Carbocyclic Two-Atom Ring-Expansion Reaction of Hydroxy Methoxyallenylindanones

Ill-Yun Jeong* , Yoshimitsu Nagao
  • *Faculty of Pharmaceutical Sciences, The University of Tokushima, Sho-machi, Tokushima 770-8505, Japan; Fax +81-8 86-33-95 03; E-mail: ynagao@ph2.tokushima-u.ac.jp
Weitere Informationen

Publikationsverlauf

Publikationsdatum:
31. Dezember 1999 (online)

 als PDF herunterladen  Lizenzen und Reprints Alle Artikel dieser Rubrik

The intramolecular tandem two-carbon ring expansion was accomplished by the treatment of 2,2-dialkyl-3-hydroxy-3-(1-methoxyallenyl)indanones 1 with some strong bases to afford the corresponding exo-benzocycloheptene-1,5-diones 3.

hydroxy methoxyallenylindanone - amine base - allenyl ketone - ring-expansion - exo-benzocycloheptene-1,5-dione