Download PDF
Synlett 1995; 1995(10): 1011-1013
DOI: 10.1055/s-1995-5160
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.

Organic Syntheses via Transition Metal Complexes, 821: Highly Selective Cyclopentadiene Annulation to Enamines via a [3+2] Cycloaddition of Alkynylcarbene Chromium and Tungsten Complexes

Adam G. Meyer, Rudolf Aumann*
  • *Organisch-Chemisches Institut der Universität Münster, Orléans-Ring 23, D-48149 Münster, Germany
Further Information

Publication History

Publication Date:
31 December 2000 (online)

  PDF Download  Permissions and Reprints All articles of this category

Alkynylcarbene complexes, (CO)5M=C(OEt)-C≡CPh 4 (M = Cr, W), react with cyclic enamines, ~CH=C(NR2)~ 7, 9, 11 and 13 (NR2 = NMe2, pyrrolidine), to afford cyclopentadiene annulation products 8, 10, 12 and 14 by an overall [3+2] cycloaddition.

Cyclopentadienes, annulation by [3+2] cycloaddition - Alkynylcarbene complexes - C3 Building blocks - Enamines - Carbene complexes, of chromium and tungsten - 1-Metalla-1,3,5-hexatrienes - Steroid synthesis