Synthesis of Pyranopyrazoles with a Chiral Quaternary Carbon Stereocenter via Copper-catalyzed Enantioselective [3+3] Cycloaddition
Wang, Meihui; Li, Bo; Gong, Baihui; Yao, Hequan; Lin, Aijun; Chemical Communications  (2022) –; doi:10.1039/D1CC07058D

data_7129620
_publ_section_title
;
 Synthesis of Pyranopyrazoles with a Chiral Quaternary Carbon Stereocenter
 via Copper-catalyzed Enantioselective [3+3] Cycloaddition
;
_journal_name_full               'Chemical Communications'
_journal_paper_doi               10.1039/D1CC07058D
_journal_year                    2022
_chemical_absolute_configuration rmad
_chemical_formula_moiety         'C25 H20 N2 O2'
_chemical_formula_sum            'C25 H20 N2 O2'
_chemical_formula_weight         380.43
_space_group_crystal_system      orthorhombic
_space_group_IT_number           19
_space_group_name_Hall           'P 2ac 2ab'
_space_group_name_H-M_alt        'P 21 21 21'
_atom_sites_solution_hydrogens   mixed
_atom_sites_solution_primary     dual
_audit_creation_date             2021-01-08
_audit_creation_method
;
Olex2 1.2
(compiled 2018.05.29 svn.r3508 for OlexSys, GUI svn.r5506)
;
_audit_update_record
;
2021-01-09 deposited with the CCDC.	2022-01-26 downloaded from the CCDC.
;
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   9.8692(3)
_cell_length_b                   10.1814(4)
_cell_length_c                   19.2471(7)
_cell_measurement_reflns_used    9884
_cell_measurement_temperature    170
_cell_measurement_theta_max      74.659
_cell_measurement_theta_min      4.595
_cell_volume                     1933.99(12)
_computing_cell_refinement       'SAINT V8.40A (?, 2016)'
_computing_data_reduction        'SAINT V8.40A (?, 2016)'
_computing_molecular_graphics    'Olex2 (Dolomanov et al., 2009)'
_computing_publication_material  'Olex2 (Dolomanov et al., 2009)'
_computing_structure_refinement  'ShelXL (Sheldrick, 2015)'
_computing_structure_solution    'ShelXT (Sheldrick, 2015)'
_diffrn_ambient_temperature      170.0
_diffrn_measured_fraction_theta_full 1.000
_diffrn_measured_fraction_theta_max 0.994
_diffrn_measurement_device_type  'Bruker D8 VENTURE'
_diffrn_measurement_method       '\f and \w scans'
_diffrn_radiation_type           CuK\a
_diffrn_radiation_wavelength     1.54178
_diffrn_reflns_av_R_equivalents  0.0610
_diffrn_reflns_av_unetI/netI     0.0349
_diffrn_reflns_Laue_measured_fraction_full 1.000
_diffrn_reflns_Laue_measured_fraction_max 0.994
_diffrn_reflns_limit_h_max       12
_diffrn_reflns_limit_h_min       -10
_diffrn_reflns_limit_k_max       12
_diffrn_reflns_limit_k_min       -12
_diffrn_reflns_limit_l_max       23
_diffrn_reflns_limit_l_min       -24
_diffrn_reflns_number            27470
_diffrn_reflns_point_group_measured_fraction_full 0.999
_diffrn_reflns_point_group_measured_fraction_max 0.993
_diffrn_reflns_theta_full        67.679
_diffrn_reflns_theta_max         74.690
_diffrn_reflns_theta_min         4.595
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.665
_exptl_absorpt_correction_T_max  0.7538
_exptl_absorpt_correction_T_min  0.6281
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
SADABS-2016/2 (Bruker,2016/2) was used for absorption correction.
wR2(int) was 0.1492 before and 0.0711 after correction.
The Ratio of minimum to maximum transmission is 0.8332.
The \l/2 correction factor is Not present.
;
_exptl_crystal_colour            colourless
_exptl_crystal_colour_primary    colourless
_exptl_crystal_density_diffrn    1.307
_exptl_crystal_description       block
_exptl_crystal_F_000             800
_exptl_crystal_size_max          0.16
_exptl_crystal_size_mid          0.08
_exptl_crystal_size_min          0.05
_refine_diff_density_max         0.142
_refine_diff_density_min         -0.182
_refine_diff_density_rms         0.040
_refine_ls_abs_structure_details
;
 Flack x determined using 1533 quotients [(I+)-(I-)]/[(I+)+(I-)]
 (Parsons, Flack and Wagner, Acta Cryst. B69 (2013) 249-259).
;
_refine_ls_abs_structure_Flack   0.08(14)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.059
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     266
_refine_ls_number_reflns         3941
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.059
_refine_ls_R_factor_all          0.0406
_refine_ls_R_factor_gt           0.0373
_refine_ls_shift/su_max          0.000
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0396P)^2^+0.5076P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0887
_refine_ls_wR_factor_ref         0.0916
_reflns_Friedel_coverage         0.745
_reflns_Friedel_fraction_full    0.999
_reflns_Friedel_fraction_max     0.992
_reflns_number_gt                3721
_reflns_number_total             3941
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            d1cc07058d2.cif
_cod_data_source_block           cu_2021041_0m
_cod_database_code               7129620
_shelx_shelxl_version_number     2018/3
_shelx_estimated_absorpt_t_max   0.968
_shelx_estimated_absorpt_t_min   0.901
_olex2_refinement_description
;
1. Fixed Uiso
 At 1.2 times of:
  All C(H) groups, All C(H,H) groups
2.a Secondary CH2 refined with riding coordinates:
 C19(H19A,H19B)
2.b Aromatic/amide H refined with riding coordinates:
 C17(H17), C2(H2A), C16(H16), C11(H11), C15(H15), C3(H3), C6(H6), C5(H5),
 C4(H4), C12(H12), C25(H25), C13(H13), C21(H21), C14(H14), C24(H24), C23(H23),
 C22(H22)
;
_olex2_submission_special_instructions 'No special instructions were received'