Synthesis 2014; 46(20): 2780-2788
DOI: 10.1055/s-0034-1378892
paper
© Georg Thieme Verlag Stuttgart · New York

Efficient Direct and Modular Stereoselective Synthesis of Highly Functionalized Tetrahydroisoquinolines and C 2-1,1′-Bitetrahydroisoquinolines

Khong Duc Thinh
School of Chemical and Biomedical Engineering, Nanyang Technological University, 62 Nanyang Drive, N1.2 B1-14, 637459, Singapore   Fax: +65-67947553   Email: zaher@ntu.edu.sg
,
Zaher M. A. Judeh*
School of Chemical and Biomedical Engineering, Nanyang Technological University, 62 Nanyang Drive, N1.2 B1-14, 637459, Singapore   Fax: +65-67947553   Email: zaher@ntu.edu.sg
› Author Affiliations
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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.

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