Synlett 1993; 1993(10): 781-783
DOI: 10.1055/s-1993-22607
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.

Cyanohydrins from Squaric Acid Ester with Trimethylsilyl Cyanide and Their Ring Opening Reactions

Yoshihiko Yamamoto* , Keiko Nunokawa, Masatomi Ohno, Shoji Eguchi
  • *Institute of Applied Organic Chemistry, Faculty of Engineering, Nagoya University, Chikusa, Nagoya 464-01, Japan
Weitere Informationen

Publikationsverlauf

Publikationsdatum:
19. März 2002 (online)

Cyanohydrin of squaric acid diester was obtained by addition of TMSCN catalyzed with ZnI2. Also direct O-ethyl cyanohydrin synthesis was performed by addition of the same reagent combined with Et3OBF4.13 These cyanohydrins were converted to 4 cyano-3-butenoate and -2-butenolide. The present method provides a new pave for the ring transformation of cyclobutenones.