A practical protocol for the preparation of (5Z)-2-alkylthio-5-arylmethylene-1-methyl-1,5-dihydro-4H-imidazol-4-one derivatives is reported. The new compounds were obtained in good yield and stereoselectivity in two steps, namely a solvent-free Knoevenagel condensation under microwave irradiation, followed by an S-alkylation reaction with various halogenoalkanes.
A new technique for high throughput solid phase synthesis using the centrifuge based liquid removal from readily available standard microtiterplates is described. This technique eliminates the filtration step and is therefore applicable to simultaneous processing of an unlimited number of
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