Diversity-Oriented Synthesis of Chromenes via Metal-Free Domino Reactions from Ketones and Phenols.
Xue, Wei-Jian; Li, Qi; Gao, Fang-Fang; Zhu, Yan-Ping; Wang, Jun-Gang; Zhang, Wei; Wu, An-Xin; ACS combinatorial science 14 (2012) 478–483; doi:10.1021/co3000506

data_4506581
_publ_section_title
;
 Diversity-Oriented Synthesis of Chromenes via Metal-Free Domino Reactions
 from Ketones and Phenols.
;
_journal_issue                   8
_journal_name_full               'ACS combinatorial science'
_journal_page_first              478
_journal_page_last               483
_journal_paper_doi               10.1021/co3000506
_journal_volume                  14
_journal_year                    2012
_chemical_formula_sum            'C17 H24 O3'
_chemical_formula_weight         276.36
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_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                 96.513(4)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   8.362(2)
_cell_length_b                   16.147(4)
_cell_length_c                   11.767(3)
_cell_measurement_reflns_used    3616
_cell_measurement_temperature    298(2)
_cell_measurement_theta_max      23.72
_cell_measurement_theta_min      2.15
_cell_volume                     1578.5(7)
_computing_cell_refinement       'Bruker SAINT'
_computing_data_collection       'Bruker APEX2'
_computing_data_reduction        'Bruker SAINT'
_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'Bruker SHELXTL'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 2008)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      298(2)
_diffrn_measured_fraction_theta_full 0.989
_diffrn_measured_fraction_theta_max 0.989
_diffrn_measurement_device_type  'Bruker APEX-II CCD'
_diffrn_measurement_method       '\f and \w scans'
_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  0.0286
_diffrn_reflns_av_sigmaI/netI    0.0263
_diffrn_reflns_limit_h_max       9
_diffrn_reflns_limit_h_min       -9
_diffrn_reflns_limit_k_max       18
_diffrn_reflns_limit_k_min       -18
_diffrn_reflns_limit_l_max       13
_diffrn_reflns_limit_l_min       -12
_diffrn_reflns_number            9592
_diffrn_reflns_theta_full        23.80
_diffrn_reflns_theta_max         23.80
_diffrn_reflns_theta_min         2.15
_exptl_absorpt_coefficient_mu    0.078
_exptl_absorpt_correction_T_max  0.9922
_exptl_absorpt_correction_T_min  0.9876
_exptl_absorpt_correction_type   none
_exptl_crystal_density_meas      0
_exptl_crystal_density_method    'not measured'
_exptl_crystal_F_000             600
_exptl_crystal_size_max          0.16
_exptl_crystal_size_mid          0.12
_exptl_crystal_size_min          0.10
_refine_diff_density_max         0.870
_refine_diff_density_min         -0.260
_refine_diff_density_rms         0.058
_refine_ls_extinction_coef       0.007(5)
_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^
_refine_ls_extinction_method     SHELXL
_refine_ls_goodness_of_fit_ref   1.094
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     189
_refine_ls_number_reflns         2398
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.094
_refine_ls_R_factor_all          0.0739
_refine_ls_R_factor_gt           0.0630
_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^)+(0.1310P)^2^+0.5900P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.2021
_refine_ls_wR_factor_ref         0.2112
_reflns_number_gt                1970
_reflns_number_total             2398
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            co3000506_si_006.cif
_cod_data_source_block           mo_120328i_0m
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Monoclinic' changed to 'monoclinic'
according to /home/saulius/struct/CIF-dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.2 from 2011-04-26.

Automatic conversion script
Id: cif_fix_values 1891 2012-01-12 08:04:46Z andrius 
;
_cod_original_sg_symbol_H-M      P2(1)/n
_cod_database_code               4506581