{'fraction_non_alphanumeric': 0.029411764705882353, 'fraction_numerical': 0.014705882352941176, 'mean_word_length': 5.625, 'pattern_counts': {'":': 0, '<': 0, '<?xml version=': 0, '>': 0, 'https://': 0, 'lorem ipsum': 0, 'www.': 0, 'xml': 0}, 'pii_count': 0, 'substrings_counts': 0, 'word_list_counts': {'cursed_substrings.json': 0, 'profanity_word_list.json': 0, 'sexual_word_list.json': 0, 'zh_pornsignals.json': 0}}
N-Oxide-Controlled Chemoselective Reduction of Nitrofuroxans

A facile and chemoselective SnCl2-mediated mild reduction of regioisomeric 3- and 4-nitrofuroxans for the synthesis of amino­furazans and aminofuroxans in good yields is developed. Reduction of 4-nitrofuroxans results in the selective formation of 4-aminofuroxans, while analogous reduction of 3-nitrofuroxans affords 3-aminofurazans as a result of simultaneous reduction of the nitro group and exocyclic N–O bond.