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1 article(s) from Paul, Andrea

Unexpected polymorphism during a catalyzed mechanochemical Knoevenagel condensation

Sebastian Haferkamp,
Andrea Paul,
Adam A. L. Michalchuk and
Franziska Emmerling

Beilstein J. Org. Chem. 2019, 15, 1141–1148, doi:10.3762/bjoc.15.110

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Scheme 1: Catalyzed mechanochemical Knoevenagel condensation of fluorobenzaldehydes and malonodinitrile. The ...

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Figure 1: Comparison of XRPD pattern of malonodinitrile (2) and (p-fluorobenzylidene) malonodinitrile (3a). T...

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Figure 2: a) XRPD pattern of (p-fluorobenzylidene)malonodinitrile (3a) direct after the synthesis with differ...

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Figure 3: Mass spectra of the different products of 3a. Red: peak off the molecular ion [M + H]⁺ of piperidin...

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Figure 4: a) In situ XRPD pattern of the mechanochemical Knoevenagel condensation of 1a and 2 with 2 µL catal...

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Figure 5: Comparison of XRPD patterns of both polymorphs of the product 3a. Red: triclinic polymorph t3a. Blu...

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Figure 6: Results of multivariate data analysis of Raman spectra for 30 Hz milling experiments. Principal com...

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Published 21 May 2019

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