Synthesis 2008(24): 3877-3902  
DOI: 10.1055/s-0028-1083256
REVIEW
© Georg Thieme Verlag Stuttgart ˙ New York

One-Pot Cyclizations of (2,4-Dioxobutylidene)phosphoranes and (2-Alkoxy-4-oxobut-2-enylidene)phosphoranes

Holger Feista, Peter Langer*a,b
a Institut für Chemie, Universität Rostock, Albert-Einstein-Str. 3a, 18059 Rostock, Germany
Fax: +49(381)4986412; e-Mail: peter.langer@uni-rostock.de;
b Leibniz-Institut für Katalyse e. V. , Universität Rostock, Albert-Einstein-Str. 29a, 18059 Rostock, Germany
Further Information

Publication History

Received 1 July 2008
Publication Date:
01 December 2008 (online)

Abstract

(2,4-Dioxobutylidene)phosphoranes and (2-alkoxy-4-oxobut-2-enylidene)phosphoranes are readily available and represent versatile building blocks in one-pot cyclizations. Their reactions with various electrophiles, such as 1,3-dicarbonyl compounds, enones, α-halo ketones, or hydrazine derivatives, allow a convenient synthesis of a variety of carbocyclic and heterocyclic ring systems.

1 Introduction

2 (2,4-Dioxobutylidene)phosphoranes

2.1 Synthesis

2.2 Cyclization Reactions

2.2.1 Formation of Five-Membered Carbacycles

2.2.2 Formation of Six-Membered Carbacycles

2.2.3 Formation of Seven-Membered Carbacycles

2.2.4 Formation of Heterocycles

3 (2-Alkoxy-4-oxobut-2-enylidene)phosphoranes

3.1 Synthesis

3.2 Cyclization Reactions

3.2.1 Five-Membered Rings

4 Summary