Metal triflate-catalyzed cyclization of arylvinylcarbinols: formal synthesis of (±)-dichroanone and (±)-taiwaniaquinone H
Kakde, Badrinath N.; De, Subhadip; Dey, Dhananjay; Bisai, Alakesh; RSC Advances 3 (2013) 8176–; doi:10.1039/c3ra41497c

data_7239049
_publ_section_title
;
 Metal triflate-catalyzed cyclization of arylvinylcarbinols: formal
 synthesis of (+-)-dichroanone and (+-)-taiwaniaquinone H
;
_journal_issue                   22
_journal_name_full               'RSC Advances'
_journal_page_first              8176
_journal_paper_doi               10.1039/c3ra41497c
_journal_volume                  3
_journal_year                    2013
_chemical_formula_sum            'C18 H22 O3'
_chemical_formula_weight         286.36
_space_group_IT_number           14
_space_group_name_Hall           '-P 2yn'
_space_group_name_H-M_alt        'P 1 21/n 1'
_symmetry_cell_setting           monoclinic
_symmetry_Int_Tables_number      14
_symmetry_space_group_name_Hall  '-P 2yn'
_symmetry_space_group_name_H-M   'P 1 21/n 1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                90.00
_cell_angle_beta                 95.807(11)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   8.0057(15)
_cell_length_b                   19.331(4)
_cell_length_c                   9.6263(16)
_cell_measurement_temperature    100(2)
_cell_measurement_theta_max      24.9178
_cell_measurement_theta_min      2.3733
_cell_volume                     1482.1(5)
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      100(2)
_diffrn_measured_fraction_theta_full 0.991
_diffrn_measured_fraction_theta_max 0.991
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0398
_diffrn_reflns_av_sigmaI/netI    0.0565
_diffrn_reflns_limit_h_max       8
_diffrn_reflns_limit_h_min       -10
_diffrn_reflns_limit_k_max       24
_diffrn_reflns_limit_k_min       -19
_diffrn_reflns_limit_l_max       12
_diffrn_reflns_limit_l_min       -12
_diffrn_reflns_number            11398
_diffrn_reflns_theta_full        26.73
_diffrn_reflns_theta_max         26.73
_diffrn_reflns_theta_min         2.11
_exptl_absorpt_coefficient_mu    0.086
_exptl_absorpt_correction_T_max  0.9830
_exptl_absorpt_correction_T_min  0.9830
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   SADABS
_exptl_crystal_density_diffrn    1.283
_exptl_crystal_density_method    'not measured'
_exptl_crystal_F_000             616
_exptl_crystal_size_max          0.20
_exptl_crystal_size_mid          0.20
_exptl_crystal_size_min          0.20
_refine_diff_density_max         0.163
_refine_diff_density_min         -0.226
_refine_diff_density_rms         0.047
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.975
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     193
_refine_ls_number_reflns         3123
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      0.975
_refine_ls_R_factor_all          0.0805
_refine_ls_R_factor_gt           0.0472
_refine_ls_shift/su_max          0.000
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0704P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1136
_refine_ls_wR_factor_ref         0.1254
_reflns_number_gt                2085
_reflns_number_total             3123
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c3ra41497c.txt
_cod_data_source_block           shelxl8
_cod_depositor_comments
;
The following automatic conversions were performed:

data item '_symmetry_cell_setting' value 'Monoclinic' was changed to
'monoclinic' in accordance with the
/home/saulius/struct/COD-crude-data/automatic-downloads/DataCite-retrospective/RSC/depositions/lib/dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.2 last updated on
2011-04-26.

Automatic conversion script
Id: cif_fix_values 6909 2019-04-08 15:41:33Z antanas 

The following automatic conversions were performed:

data name '_iucr_refine_instruction_details' was replaced with
'_iucr_refine_instructions_details' as specified in the replacement
file 'data/replacement-values/replacement_tags.lst'.

Automatic conversion script
Id: cif_correct_tags 9268 2022-04-12 08:56:07Z antanas 
;
_cod_original_sg_symbol_H-M      'P 21/n'
_cod_database_code               7239049