A multicomponent cascade reaction for the synthesis of novel chromenopyranpyrazole scaffolds
Manickam Bakthadoss; Damodharan Kannan; Raman Selvakumar; Chem.Commun. 49 (2013) 10947–; doi:10.1039/c3cc45502e

data_7110024
_publ_section_title
;
 A multicomponent cascade reaction for the synthesis of novel
 chromenopyranpyrazole scaffolds
;
_journal_name_full               Chem.Commun.
_journal_page_first              10947
_journal_paper_doi               10.1039/c3cc45502e
_journal_volume                  49
_journal_year                    2013
_chemical_absolute_configuration unk
_chemical_formula_moiety         'C28 H23 N3 O2'
_chemical_formula_sum            'C28 H23 N3 O2'
_chemical_formula_weight         433.49
_space_group_IT_number           4
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  'P 2yb'
_symmetry_space_group_name_H-M   'P 1 21 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                 104.490(19)
_cell_angle_gamma                90.00
_cell_formula_units_Z            2
_cell_length_a                   11.136(9)
_cell_length_b                   6.875(6)
_cell_length_c                   15.243(12)
_cell_measurement_reflns_used    1022
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      28.39
_cell_measurement_theta_min      1.38
_cell_volume                     1129.9(16)
_computing_cell_refinement       APEX2
_computing_data_collection       'APEX2 (Bruker, 2008)'
_computing_data_reduction        'SAINT (Bruker, 2008)'
_computing_molecular_graphics    'ORTEP3 (Farrugia, 1997)'
_computing_publication_material  'SHELXL97 and PLATON (Spek, 2003)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 2005)'
_computing_structure_solution    'SHELXS97 (Sheldrick, 2005)'
_diffrn_ambient_temperature      293(2)
_diffrn_measured_fraction_theta_full 0.998
_diffrn_measured_fraction_theta_max 0.987
_diffrn_measurement_device_type
'Bruker SMART APEXII area-detector diffractometer'
_diffrn_measurement_method       '\w and \f 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  0.0318
_diffrn_reflns_av_sigmaI/netI    0.0430
_diffrn_reflns_limit_h_max       14
_diffrn_reflns_limit_h_min       -14
_diffrn_reflns_limit_k_max       8
_diffrn_reflns_limit_k_min       -9
_diffrn_reflns_limit_l_max       19
_diffrn_reflns_limit_l_min       -20
_diffrn_reflns_number            9267
_diffrn_reflns_theta_full        25.00
_diffrn_reflns_theta_max         28.39
_diffrn_reflns_theta_min         1.38
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.081
_exptl_absorpt_correction_T_max  0.984
_exptl_absorpt_correction_T_min  0.980
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'SADABS (Bruker, 2008)'
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.274
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             456
_exptl_crystal_size_max          0.25
_exptl_crystal_size_mid          0.23
_exptl_crystal_size_min          0.2
_refine_diff_density_max         0.313
_refine_diff_density_min         -0.215
_refine_diff_density_rms         0.040
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   -0.7(11)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.047
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     300
_refine_ls_number_reflns         4850
_refine_ls_number_restraints     1
_refine_ls_restrained_S_all      1.047
_refine_ls_R_factor_all          0.0495
_refine_ls_R_factor_gt           0.0413
_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^)+(0.0688P)^2^+0.0641P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1080
_refine_ls_wR_factor_ref         0.1158
_reflns_number_gt                4278
_reflns_number_total             4850
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c3cc45502e.txt
_cod_data_source_block           final_nitrile
_cod_original_sg_symbol_H-M      P21
_cod_database_code               7110024