Download PDF
Synthesis 1990; 1990(9): 783-784
DOI: 10.1055/s-1990-27014
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.

A Convenient Lactonization of 2- and 3-Cyclopropylalkanoic Acids to γ- and δ-Lactones

Kotoji Sugahara* , Tsutomu Fujita, Shoji Watanabe, Masami Sakamoto, Ken-ich Sugimoto
  • *Department of Chemistry, Nippon Medical School, Kosugicho, Nakahara, Kawasaki 211, Japan
Further Information

Publication History

Publication Date:
17 September 2002 (online)

  PDF Download  Permissions and Reprints All articles of this category

A convenient preparative method of obtaining 2,2,4,5,5-pentaalkyl-δ- valerolactones 2a-d or 2,2,4,4-tetraalkyl-γ-butyrolactones 4a-e by the acid-catalyzed lactonization of 3-cyclopropylalkanoic acids, and for obtaining bicyclo-γ-lactones 6a-d from bicyclic 2-cyclopropylalkanoic acids 5a-d is presented.

      >