We report the direct light activation of ethynylbenziodoxolone (EBX) reagents for the oxyalkynylation of aryl- and amino-cyclopropanes {as well|also|too|at the same time} as styrenes. Irradiation with visible light at 440 nm promoted the reaction {without|with out|without having|with no|devoid of|without the need of} the {need|require|want|need to have|will need|have to have} of a photocatalyst. By the {choice|option|selection|decision} {of the|from the|in the|on the|with the|of your} aryl group {on the|around the} cyclopropane, it was possilbe to {completely|totally|entirely|fully|absolutely} switch the outcome {of the|from the|in the|on the|with the|of your} reaction {from the|in the} oxyalkynylation {of the|from the|in the|on the|with the|of your} C-C bond {to the|towards the|for the} alkynylation {of the|from the|in the|on the|with the|of your} C-H bond. This {effect|impact} has been speculatively attributed {to the|towards the|for the} conformational {control|manage|handle} induced by the aryl group {on the|around the} cyclopropane ring4-Amino-6-bromopyridin-3-ol Chemical name Mal-amido-PEG8-NHS ester In stock PMID:23865629
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