Synthesis of amino acid derived imidazolidinium salts as new NHC precatalysts
摘要:
The preparation of new chiral symmetrically and unsymmetrically N,N'-disubstituted imidazolium based NHC salts Ib, IIb, IIIa-c and IVc-h from the amino acids L-proline and L-phenylalanine, is reported. Some preliminary tests have been carried out, demonstrating that the chiral NHCs give chiral induction in organometallic catalysis and can be used as organocatalysts. (C) 2011 Elsevier Ltd. All rights reserved.
Synthesis of amino acid derived imidazolidinium salts as new NHC precatalysts
摘要:
The preparation of new chiral symmetrically and unsymmetrically N,N'-disubstituted imidazolium based NHC salts Ib, IIb, IIIa-c and IVc-h from the amino acids L-proline and L-phenylalanine, is reported. Some preliminary tests have been carried out, demonstrating that the chiral NHCs give chiral induction in organometallic catalysis and can be used as organocatalysts. (C) 2011 Elsevier Ltd. All rights reserved.
Synthesis of amino acid derived imidazolidinium salts as new NHC precatalysts
作者:Ragnhild B. Strand、Trygve Helgerud、Tina Solvang、Christian A. Sperger、Anne Fiksdahl
DOI:10.1016/j.tetasy.2011.11.015
日期:2011.12
The preparation of new chiral symmetrically and unsymmetrically N,N'-disubstituted imidazolium based NHC salts Ib, IIb, IIIa-c and IVc-h from the amino acids L-proline and L-phenylalanine, is reported. Some preliminary tests have been carried out, demonstrating that the chiral NHCs give chiral induction in organometallic catalysis and can be used as organocatalysts. (C) 2011 Elsevier Ltd. All rights reserved.