{'fraction_non_alphanumeric': 0.018726591760299626, 'fraction_numerical': 0.00749063670411985, 'mean_word_length': 5.858974358974359, '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}}
Preparation of a Bridged Verbenindenyl Ligand for Metallocenes

Abstract The preparation of an annulated verbenyl indene is described. Reduction of the verbenone oxo group and water elimination provided a verbenylindene with an embedded fulvene unit, which was reduced to an annulated verbenylindene, a fluorene derivative. The ansa‐bridge was constructed between the fluorene 9‐position and 6,6‐dimethylfulvene by way of the lithiated indene. Dilithiation of the ligand and treatment with ZrCl4 yielded the corresponding zirconocene.