Merging catalyst-free synthesis and iodine catalysis: one-pot synthesis of dihydrofuropyrimidines and spirodihydrofuropyrimidine pyrazolones
Zheng, Ya-Yun; Feng, Kai-Xiang; Xia, Ai-Bao; Liu, Jie; Tang, Cheng-Ke; Zhou, Zhan-Yu; Xu, Dan-Qian; RSC Advances 9 (2019) 9770–; doi:10.1039/C9RA01665A

data_7232548
_publ_section_title
;
 Merging catalyst-free synthesis and iodine catalysis: one-pot synthesis
 of dihydrofuropyrimidines and spirodihydrofuropyrimidine pyrazolones
;
_journal_issue                   17
_journal_name_full               'RSC Advances'
_journal_page_first              9770
_journal_paper_doi               10.1039/C9RA01665A
_journal_volume                  9
_journal_year                    2019
_chemical_formula_sum            'C24 H24 N6 O3'
_chemical_formula_weight         444.49
_space_group_crystal_system      monoclinic
_space_group_IT_number           14
_space_group_name_Hall           '-P 2ybc'
_space_group_name_H-M_alt        'P 1 21/c 1'
_symmetry_space_group_name_Hall  '-P 2ybc'
_symmetry_space_group_name_H-M   'P 1 21/c 1'
_atom_sites_solution_hydrogens   mixed
_audit_creation_method           SHELXL-2013
_audit_update_record
;
2019-01-26 deposited with the CCDC.    2019-03-19 downloaded from the CCDC.
;
_cell_angle_alpha                90
_cell_angle_beta                 100.3240(10)
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   18.8434(7)
_cell_length_b                   9.6451(3)
_cell_length_c                   12.5493(5)
_cell_measurement_reflns_used    4374
_cell_measurement_temperature    296(2)
_cell_measurement_theta_max      54.538
_cell_measurement_theta_min      5.360
_cell_volume                     2243.87(14)
_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-2013 (Sheldrick, 2013)'
_computing_structure_solution    'SHELXS-97 (Sheldrick 2008)'
_diffrn_ambient_temperature      296(2)
_diffrn_measured_fraction_theta_full 0.992
_diffrn_measured_fraction_theta_max 0.992
_diffrn_measurement_device_type  'Bruker APEX-II CCD'
_diffrn_measurement_method       '\f and \w scans'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0289
_diffrn_reflns_av_unetI/netI     0.0393
_diffrn_reflns_Laue_measured_fraction_full 0.992
_diffrn_reflns_Laue_measured_fraction_max 0.992
_diffrn_reflns_limit_h_max       22
_diffrn_reflns_limit_h_min       -23
_diffrn_reflns_limit_k_max       11
_diffrn_reflns_limit_k_min       -11
_diffrn_reflns_limit_l_max       15
_diffrn_reflns_limit_l_min       -12
_diffrn_reflns_number            10897
_diffrn_reflns_point_group_measured_fraction_full 0.992
_diffrn_reflns_point_group_measured_fraction_max 0.992
_diffrn_reflns_theta_full        25.242
_diffrn_reflns_theta_max         25.998
_diffrn_reflns_theta_min         2.680
_exptl_absorpt_coefficient_mu    0.090
_exptl_absorpt_correction_T_max  0.7456
_exptl_absorpt_correction_T_min  0.6672
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   sadabs
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.316
_exptl_crystal_description       prismatic
_exptl_crystal_F_000             936
_exptl_crystal_size_max          0.170
_exptl_crystal_size_mid          0.150
_exptl_crystal_size_min          0.130
_refine_diff_density_max         0.383
_refine_diff_density_min         -0.356
_refine_diff_density_rms         0.042
_refine_ls_extinction_coef       0.033(6)
_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   1.048
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     310
_refine_ls_number_reflns         4375
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.048
_refine_ls_R_factor_all          0.0786
_refine_ls_R_factor_gt           0.0584
_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^)+(0.0851P)^2^+0.8867P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1537
_refine_ls_wR_factor_ref         0.1739
_reflns_Friedel_coverage         0.000
_reflns_number_gt                3292
_reflns_number_total             4375
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            c9ra01665a2.cif
_cod_data_source_block           dd18202
_cod_database_code               7232548
_shelx_estimated_absorpt_t_min   0.985
_shelx_estimated_absorpt_t_max   0.988
_shelxl_version_number           2013-4
_shelx_res_checksum              9962