An unexpected thermal-ring-rearrangement of benzochromenes to inden-3-yl-naphthols with pTsOH.
Yaragorla, Srinivasarao; Khan, Tabassum; Organic & biomolecular chemistry 16 (2018) 7920–7925; doi:10.1039/c8ob02264j

data_7156489
_publ_section_title
;
 An unexpected thermal-ring-rearrangement of benzochromenes to
 inden-3-yl-naphthols with pTsOH.
;
_journal_issue                   42
_journal_name_full               'Organic &amp; biomolecular chemistry'
_journal_page_first              7920
_journal_page_last               7925
_journal_paper_doi               10.1039/c8ob02264j
_journal_volume                  16
_journal_year                    2018
_chemical_formula_sum            'C21 H17 Br O'
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_audit_update_record
;
2018-07-25 deposited with the CCDC.
2018-10-03 downloaded from the CCDC.
;
_cell_angle_alpha                90.00
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_computing_cell_refinement       'Bruker SAINT'
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_computing_publication_material  'Bruker SHELXTL'
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_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      299(2)
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_diffrn_measurement_device_type  'Bruker APEX-II CCD'
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_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0404P)^2^+0.7980P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
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_reflns_number_gt                2496
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_cod_data_source_file            c8ob02264j2.cif
_cod_data_source_block           vr3000_a
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Monoclinic' changed to 'monoclinic'
according to
/home/data/users/saulius/crontab/automatic-downloads/rss-feeds/RSC/lib/dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.2 from 2011-04-26.

Automatic conversion script
Id: cif_fix_values 4973 2017-02-22 13:04:09Z antanas 

 Adding full bibliography for 7156488--7156489.cif.
;
_cod_original_cell_volume        1725.2(6)
_cod_original_sg_symbol_H-M      P2(1)/c
_cod_database_code               7156489