Journal
RSC ADVANCES
Volume 9, Issue 62, Pages 36213-36216Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c9ra06596b
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Funding
- National Key Research and Development Program of China [2018YFD0200100]
- National Natural Science Foundation of China [21732002, 21672117, 21772102]
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Herein, we report an organo-photoredox-based protocol using 2,2-diethoxyacetic acid as the acetal source to achieve acetalation of alkynyl bromides to afford various alkynyl acetal products. In addition to arylethynyl bromides, substrates bearing heteroaryl rings (thiophene, pyridine, and indole) smoothly gave the corresponding acetalation products. This mild protocol has potential utility for the synthesis of aldehydes by further protonization.
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