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Legendre B. Baziard-Mouysset G. Anastassiadou M. Leger J. M. Payard M. 《Journal of Thermal Analysis and Calorimetry》2001,66(2):659-673
The compound 2-(2-benzofuryl) Δ-2 imidazoline, has been studied by DSC, TG, X-ray diffraction and thermomicroscopy.
We shall see that in the case of a study by DSC this compound presents a strange behaviour, which apparently is in contradiction
with the thermodynamic rules. In a case of monotropy, if we have the α-phase (stable) and the γ-phase (metastable), after
melting and cooling only theα-phase could crystallise. But this compound can give, according to the rate of cooling, theγ-phase
metastable. The rate of cooling is of fundamental importance and the monotropic behaviour of this compound will be explained
using the Gibbs function G=f(T) for P=1 atm.
This revised version was published online in August 2006 with corrections to the Cover Date. 相似文献
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Pascale Besse Genevive Baziard-Mouysset Kamal Boubekeur Pierre Palvadeau Henri Veschambre Marc Payard Guy Mousset 《Tetrahedron: Asymmetry》1999,10(24):199-4754
From the microbiological reductions of 2-acetyl or 2-benzoylchromen-4-one both enantiomers of the corresponding alcohols were obtained with high enantiomeric excess. The absolute configurations were determined directly by an X-ray structural determination. The results obtained showed that for most of the microorganisms tested, an inversion of the configuration of the alcohol occurred with the change of the substituent (methyl to phenyl group) in position 2, but also with the presence of a bromine atom in position 6 of the aromatic ring, positioned quite far from the prochiral centre. 相似文献
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