Synthesis of Substituted Tetralins and Benzosuberans via BF3·OEt2-Mediated Formal (4 + 2) and (5 + 2) Stereocontrolled Cycloaddition of 4-Alkenols with Veratrol.
Chang, Meng-Yang; Cheng, Yu-Chieh; Organic letters 18 (2016) 608–611; doi:10.1021/acs.orglett.5b03696

data_1541920
_publ_section_title
;
 Synthesis of Substituted Tetralins and Benzosuberans via
 BF3&#x00B7;OEt2-Mediated Formal (4 + 2) and (5 + 2) Stereocontrolled
 Cycloaddition of 4-Alkenols with Veratrol.
;
_journal_issue                   3
_journal_name_full               'Organic letters'
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_journal_page_last               611
_journal_paper_doi               10.1021/acs.orglett.5b03696
_journal_volume                  18
_journal_year                    2016
_chemical_formula_sum            'C25 H31 F O3 S'
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_space_group_name_Hall           '-P 2yn'
_space_group_name_H-M_alt        'P 1 21/n 1'
_symmetry_space_group_name_Hall  '-P 2yn'
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_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0612P)^2^+2.0463P] where P=(Fo^2^+2Fc^2^)/3'
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_reflns_number_gt                11179
_reflns_number_total             13610
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            ol5b03696_si_012.cif
_cod_data_source_block           150802LT_0m_a
_cod_depositor_comments
;
The following automatic conversions were performed:

'_exptl_crystal_density_meas' value 'not measured' was changed to '?'
- the value is perceived as not measured.

Automatic conversion script
Id: cif_fix_values 4268 2015-11-12 08:31:59Z antanas 

 Adding full bibliography for 1541918--1541929.cif.
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_cod_database_code               1541920
_shelxl_version_number           2014/6
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_shelx_hkl_checksum              62731