Issue 20, 2000

Synthesis of chiral organotin hydrides containing menthyl and oxazoline substituents

Abstract

A series of chiral non-racemic triorganotin halides and triorganotin hydrides containing one or two (1R,2S,5R)-menthyl (Men) substituents as well as 2-(4,4-dimethyl-2-oxazolinyl)-5-(methyl)phenyl (L) or chiral 2-(4-isopropyl-2-oxazolinyl)-5-(methyl)phenyl ligand (L*) have been synthesized and characterised. Each of SnCl(Men)PhL and SnH(Men)PhL has a stereogenic tin centre and were isolated in diastereomeric ratios of 70∶30 and 50∶50, respectively; SnCl(Men)PhL* and SnH(Men)PhL* were synthesized in diastereomeric ratios of 50∶50 and 66∶34, respectively. Single crystal X-ray analysis of SnCl(Men)2L and SnCl(Men)PhL reveals a tendency towards five co-ordination at the tin centre as a result of N→Sn interactions. AM1 calculations provide good qualitative predictability of the molecular geometries observed in the solid state as well as the diastereomeric ratios in solution.

Supplementary files

Article information

Article type
Paper
Submitted
30 May 2000
Accepted
07 Sep 2000
First published
02 Oct 2000

J. Chem. Soc., Dalton Trans., 2000, 3693-3698

Synthesis of chiral organotin hydrides containing menthyl and oxazoline substituents

D. Dakternieks, K. Dunn, C. H. Schiesser and E. R. T. Tiekink, J. Chem. Soc., Dalton Trans., 2000, 3693 DOI: 10.1039/B004259P

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