These are preliminary reports that have not been peer-reviewed. They should not be regarded as conclusive, guide clinical practice/health-related behavior, or be reported in news media as established information. For more information, please see our FAQs.
Regio- and Diastereoselective Intermolecular [2+2] Cycloadditions Photocatalyzed by Quantum Dots
preprintsubmitted on 13.02.2019, 17:13 and posted on 14.02.2019, 15:57 by Yishu Jiang, Chen Wang, Cameron Rogers, Mohamad S. Kodaimati, Emily Weiss
Here we show that colloidal quantum dots serve as visible-light chromophores, photocatalysts, and resuable scaffolds for homo- and hetero-intermolecular [2+2] photocycloadditions of 4-vinylbenzoic acid derivatives, with >90% tunable regioselectivity and up to 98% diastereoselectivity for the previously minor syn-cyclobutane products, including the syn-heda-to-tail cyclobutane, which has never been produced as the major product of a photochemical reaction.