{'fraction_non_alphanumeric': 0.014772727272727272, 'fraction_numerical': 0.0, 'mean_word_length': 5.992063492063492, '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}}
Recent Advances in Transition-Metal Catalyzed Defunctionalization Reaction

Functional groups are atoms or groups that determine the chemical properties of organic compounds. It often plays the role of guiding group in organic synthesis chemistry. Defunctionalization is the chemical transformation of a substrate with more functional groups into a compound with fewer functional groups, which has positive applications in solving environmental problems, resource shortage and biomass degradation. But due to the bond energy, heating, acid or base are often involved in defunctionalization. In recent years, defunctionalization has been moving toward a greener and more sustainable direction. Metal catalysis provides a new way for defunctionalization. The recent applications of different metalmediated defunctionalization in organic synthesis and their mechanism are summarized.