Abstract
The sesquiterpenedial polygodial undergoes smooth reactions with primary amines, under mild conditions, to give stable derivatives (1,3,4-trisubstituted pyrroles) useful for characterisation by gas chromatography—mass spectrometry. Diastereomeric pyrroles formed from chiral amines were in suitable instances separable by gas chromatography. With hydroxy amines it may be advantageous to convert the initial products into O-trimethylsilyl or O- tert.-butyldimethylsilyl ethers for analysis. All the derivatives studied yielded molecular ions under electron impact, while informative fragmentations also occurred.
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