Literature DB >> 11975607

A highly reactive titanium precatalyst for intramolecular hydroamination reactions.

Lutz Ackermann1, Robert G Bergman.   

Abstract

[reaction: see text]. Tetrakisamido titanium complexes are significantly more active than Cp2TiMe2 (1) in the intramolecular hydroamination of aminoalkynes and aminoallenes. In the latter case, the regioselectivity of the transformation depends on the nature of the precatalyst, yielding the most selective and reactive catalysis with the bis(sulfonamido) complex 11.

Entities:  

Mesh：

Substances：

Year:  2002        PMID： 11975607      PMCID： PMC1575920          DOI： 10.1021/ol0256724

Source DB:  PubMed          Journal:  Org Lett        ISSN： 1523-7052            Impact factor:   6.005


  9 in total

1.  Synthesis of chiral, enantiopure zirconocene imido complexes: highly selective kinetic resolution and stereoinversion of allenes, and evidence for a stepwise cycloaddition/retrocycloaddition reaction mechanism.

Authors:  Z K Sweeney; J L Salsman; R A Andersen; R G Bergman
Journal:  Angew Chem Int Ed Engl       Date:  2000-07-03       Impact factor: 15.336

2.  Palladium-catalyzed hydroamination of 1,3-dienes: a colorimetric assay and enantioselective additions.

Authors:  O Löber; M Kawatsura; J F Hartwig
Journal:  J Am Chem Soc       Date:  2001-05-09       Impact factor: 15.419

3.  Metal-Initiated Amination of Alkenes and Alkynes.

Authors:  Thomas E. Müller; Matthias Beller
Journal:  Chem Rev       Date:  1998-04-02       Impact factor: 60.622

4.  Recent Developments in Transition Metal Catalyzed Intermolecular Hydroamination Reactions-A Breakthrough?

Authors:  Markus Nobis; Birgit Driessen-Hölscher
Journal:  Angew Chem Int Ed Engl       Date:  2001-11-05       Impact factor: 15.336

5.  (eta(3)-Allyl)palladium Complexes Bearing Diphosphinidenecyclobutene Ligands: Highly Active Catalysts for the Hydroamination of 1,3-Dienes This work was supported by a Grant-in-Aid for Scientific Research from the Ministry of Education, Science, Sports and Culture, Japan.

Authors:  Tatsuya Minami; Hideyuki Okamoto; Shintaro Ikeda; Rika Tanaka; Fumiyuki Ozawa; Masaaki Yoshifuji
Journal:  Angew Chem Int Ed Engl       Date:  2001-12-03       Impact factor: 15.336

6.  A convenient rhodium-catalyzed intermolecular hydroamination procedure for terminal alkynes.

Authors:  C G Hartung; A Tillack; H Trauthwein; M Beller
Journal:  J Org Chem       Date:  2001-09-21       Impact factor: 4.354

7.  Imidotitanium complexes as hydroamination catalysts: substantially enhanced reactivity from an unexpected cyclopentadienide/amide ligand exchange.

Authors:  J S Johnson; R G Bergman
Journal:  J Am Chem Soc       Date:  2001-03-28       Impact factor: 15.419

8.  Organolanthanide-catalyzed intramolecular hydroamination/cyclization of amines tethered to 1,2-disubstituted alkenes.

Authors:  J S Ryu; T J Marks; F E McDonald
Journal:  Org Lett       Date:  2001-10-04       Impact factor: 6.005

9.  Intermolecular Hydroamination of Alkynes Catalyzed by Dimethyltitanocene.

Authors: 
Journal:  Angew Chem Int Ed Engl       Date:  1999-11-15       Impact factor: 15.336
  9 in total
  8 in total

1.  Catalytic hydroamination of alkynes and norbornene with neutral and cationic tantalum imido complexes.

Authors:  Laura L Anderson; John Arnold; Robert G Bergman
Journal:  Org Lett       Date:  2004-07-22       Impact factor: 6.005

2.  Homogeneous catalytic hydroamination of alkynes and allenes with ammonia.

Authors:  Vincent Lavallo; Guido D Frey; Bruno Donnadieu; Michele Soleilhavoup; Guy Bertrand
Journal:  Angew Chem Int Ed Engl       Date:  2008       Impact factor: 15.336

3.  Gold(I)-Catalyzed Enantioselective Intramolecular Hydroamination of Allenes with Ureas.

Authors:  Hao Li; Seong Du Lee; Ross A Widenhoefer
Journal:  J Organomet Chem       Date:  2011-01-01       Impact factor: 2.369

4.  Rearrangements and stereomutations of metallacycles derived from allenes and imidozirconium complexes.

Authors:  Forrest E Michael; Andrew P Duncan; Zachary K Sweeney; Robert G Bergman
Journal:  J Am Chem Soc       Date:  2005-02-16       Impact factor: 15.419

5.  Zirconium Bis(Amido) Catalysts for Asymmetric Intramolecular Alkene Hydroamination.

Authors:  Donald A Watson; Melanie Chiu; Robert G Bergman
Journal:  Organometallics       Date:  2006-09-25       Impact factor: 3.876

6.  Reactivity of terminal imido complexes of group 4-6 metals: stoichiometric and catalytic reactions involving cycloaddition with unsaturated organic molecules.

Authors:  Kento Kawakita; Yuya Kakiuchi; Hayato Tsurugi; Kazushi Mashima; Bernard F Parker; John Arnold; Ian A Tonks
Journal:  Coord Chem Rev       Date:  2020-01-14       Impact factor: 22.315

7.  Use of group 4 bis(sulfonamido) complexes in the intramolecular hydroamination of alkynes and allenes.

Authors:  Lutz Ackermann; Robert G Bergman; Rebecca N Loy
Journal:  J Am Chem Soc       Date:  2003-10-01       Impact factor: 15.419

8.  Intermolecular hydroamination of allenes with N-unsubstituted carbamates catalyzed by a gold(I) N-heterocyclic carbene complex.

Authors:  Robert E Kinder; Zhibin Zhang; Ross A Widenhoefer
Journal:  Org Lett       Date:  2008-06-21       Impact factor: 6.005
  8 in total

北京卡尤迪生物科技股份有限公司 © 2022-2023.