Synlett 2005(5): 0732-0743  
DOI: 10.1055/s-2005-864794
ACCOUNT
© Georg Thieme Verlag Stuttgart · New York

Design of Resolving Agents Based on Crystal Engineering

Kazushi Kinbara*
Department of Chemistry and Biotechnology, School of Engineering, The University of Tokyo, 7-3-1, Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
Fax: +81(3)58417310; e-Mail: kinbara@macro.t.u-tokyo.ac.jp;
Further Information

Publication History

Received 8 July 2004
Publication Date:
09 March 2005 (online)

Abstract

As a result of systematic studies on the optical resolution of racemates via crystallization, we have found that in many cases, common characteristic hydrogen-bond networks were formed in the less-soluble diastereomeric salts or conglomerates. Design of resolving/derivatizing agents could be achieved on the basis of the concept of crystal engineering, by which molecules were designed to achieve stable hydrogen-bond networks with target racemates.

  • 1 Introduction

  • 2 Design of Acidic Resolving Agents for Diastereomeric ­Resolution

  • 2.1 Systematic Study of the Resolution of 1-Arylethylamines with Mandelic Acid

  • 2.2 p-Substituted Mandelic Acids

  • 2.3 2-Naphthylglycolic Acid

  • 3 Design of Basic Resolving Agents for Diastereomeric ­Resolution

  • 3.1 Systematic Study of the Resolution of 2-Arylalkanoic Acids with 2-Amino-1,2-diphenylethanol

  • 3.2 cis-1-Aminoindan-2-ol

  • 3.3 trans-1-Aminoindan-2-ol, trans-Aminoindan-1-ol, and trans-Aminoindan-3-ol

  • 4 Design of Spontaneous Resolutions

  • 4.1 Salts of Achiral Carboxylic Acids with Racemic Primary Amines

  • 4.2 Salts of Racemic Acids with Racemic Primary Amines

  • 5 Summary