o‐Iodoxybenzoic Acid‐ and Tetraethylammonium Bromide‐Mediated Oxidative Transformation of Primary Carboxamides to One‐Carbon Dehomologated Nitriles.

Bhalerao, Dinesh S.; Mahajan, Ulhas S.; Chaudhari, Kiran H.; Akamanchi, Krishnacharya G.

doi:10.1002/chin.200721069

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2021

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“…Spectral data are in agreement with the literature. 46 Chloro-4-(2-nitrovinyl)benzene (2r). (4-Chlorostyryl)boronic acid (176 mg, 0.65 mmol) was employed.…”

Section: ■ Experimental Sectionmentioning

confidence: 99%

Ipso Nitration of Aryl Boronic Acids Using Fuming Nitric Acid

et al. 2021

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The ipso nitration of aryl boronic acid derivatives has been developed using fuming nitric acid as the nitrating agent. This facile procedure provides efficient and chemoselective access to a variety of aromatic nitro compounds. While several activating agents and nitro sources have been reported in the literature for this synthetically useful transformation, this report demonstrates that these processes likely generate a common active reagent, anhydrous HNO3. Kinetic and mechanistic studies have revealed that the reaction order in HNO3 is >2 and indicate that the •NO2 radical is the active species.

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“…Spectral data are in agreement with the literature. 46 Chloro-4-(2-nitrovinyl)benzene (2r). (4-Chlorostyryl)boronic acid (176 mg, 0.65 mmol) was employed.…”

Section: ■ Experimental Sectionmentioning

confidence: 99%