Tropylium-promoted prenylation reactions of phenols in continuous flow
- Klaus Omoregbee1,2
- Kevin N. H. Luc1
- An H. Dinh1
- Thanh Vinh Nguyen1
- 1School of Chemistry, University of New South Wales, Sydney, Australia
- 2Department of Biology, Chemistry and Pharmacy, Freie Universität Berlin, Berlin, GermanyRead the publication that featured this abstract
2-Dimethylchroman framework occurs in many complex natural and synthetic compounds which show various types of biological activities such as antitumor, anticancer, antihypertensive, antioxidant and antithrombotic. Herein, we report an organocatalytic approach to the synthesis of 2,2-dimethylchromans where tropylium tetrafluoroborate was used as an organic Lewis acid catalyst for metal-free prenylation reactions of phenols. This method was amenable to continuous flow chemistry to enable an inexpensive pathway to access 2,2-dimethylchromans on multiple-gram scale with short reaction times, high efficiencies and simple product purification.
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