The enantioselectivity of the addition of diethylzinc to aryl aldehydes catalysed by (S)-2-(3-methyl-2-pyridyl)-3,5-di-tert-butylphenol have been found to depend heavily on temperature with the inversion temperatures affected by the para-substituents of aryl aldehydes.
H. Zhang and K. Shing Chan, J. Chem. Soc., Perkin Trans. 1, 1999, 381 DOI: 10.1039/A808920E
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