Elsevier

Tetrahedron Letters

Volume 40, Issue 5, 29 January 1999, Pages 961-964
Tetrahedron Letters

A novel “type-two” intramolecular Diels-Alder reaction leading to three-atom-bridged tricyclic pyrazoles

https://doi.org/10.1016/S0040-4039(98)02528-3Get rights and content

Abstract

(Acryloyloxy)butylated pyrazolo-3-sulfolenes are thermolyzed to the corresponding o-quinodimethanes which undergo simultaneous “type-two” intramolecular Diels-Alder reactions to form two- and three-atom-bridged tricyclic pyrazoles.

References (19)

  • J.D. Winkler et al.

    Tetrahedron Lett.

    (1995)
  • R.W. Jackson et al.

    Tetrahedron Lett.

    (1994)
  • J.S. Yadav et al.

    Tetrahedron Lett.

    (1994)
  • C.A. Alaimo et al.

    Tetrahedron Lett.

    (1994)
  • K.J. Shea et al.

    Tetrahedron Lett.

    (1988)
  • T.S. Chou et al.

    Tetrahedron Lett.

    (1996)
  • L.A. White et al.

    Tetrahedron

    (1996)
  • K.J. Shea et al.

    J. Am. Chem. Soc.

    (1978)
  • K.J. Shea et al.

    J. Am. Chem. Soc.

    (1982)
There are more references available in the full text version of this article.
View full text