Synlett 2004(10): 1653-1672  
DOI: 10.1055/s-2004-829579
ACCOUNT
© Georg Thieme Verlag Stuttgart · New York

Development of the Ti-Catalyzed Intermolecular Hydroamination of Alkynes

Sven Doye*
Organisch-Chemisches Institut, Universität Heidelberg, Im Neuenheimer Feld 270, 69120 Heidelberg, Germany
Fax: +49(6221)544205; e-Mail: sven.doye@urz.uni-heidelberg.de;
Further Information

Publication History

Received 11 December 2003
Publication Date:
15 July 2004 (online)

Abstract

This account describes the development of Ti-catalyzed intermolecular hydroamination reactions of alkynes, achieved in the author’s laboratories during the last five years. Starting from initial ideas and early results with Cp2TiMe2 as a catalyst precursor, mechanistic studies and applications of Cp2TiMe2-catalyzed hydroaminations of alkynes for the synthesis of biologically interesting classes of compounds are presented. Particular attention is paid to the identification of improved second generation catalysts such as Cp*2TiMe2 and Ind2TiMe2.

  • 1 Introduction

  • 2 Initial Ideas

  • 3 Cp2TiMe2: The First Generation Catalyst

  • 4 Cp*2TiMe2: The Improved Catalyst

  • 5 Other Titanium Catalysts

  • 6 Ind2TiMe2: The General Catalyst

  • 7 Hydroamination Reactions Employing Enantiomerically Pure Amines

  • 8 Applications for the Synthesis of Biologically Interesting Compounds

  • 9 Summary and Outlook