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Synthesis 2014; 46(20): 2780-2788
DOI: 10.1055/s-0034-1378892
DOI: 10.1055/s-0034-1378892
paper
Efficient Direct and Modular Stereoselective Synthesis of Highly Functionalized Tetrahydroisoquinolines and C 2-1,1′-Bitetrahydroisoquinolines
Further Information
Publication History
Received: 04 April 2014
Accepted after revision: 04 July 2014
Publication Date:
30 July 2014 (online)


Abstract
An efficient modular stereoselective synthesis of highly functionalized tetrahydroisoquinolines and C2 -1,1′-bitetrahydroisoquinolines chiral ligands is disclosed. The synthetic methodology relies on direct stereoselective Pictet–Spengler cyclization between (S)-4-benzyloxazolidin-2-ones and various mono- and dialdehydes using inexpensive sulfuric acid as the catalyst.
Key words
stereoselective synthesis - chiral bitetrahydroisoquinolines - C 2-symmetric chiral ligands - diastereoselective Pictet–Spengler reaction - isoquinolineSupporting Information
- for this article is available online at http://www.thieme-connect.com/products/ejournals/journal/ 10.1055/s-00000084.
- Supporting Information