Magnetically retrievable nano crystalline CuFe2O4 catalyzed multi-component reaction: a facile and efficient synthesis of functionalized dihydropyrano[2,3-c]pyrazole, pyrano[3,2-c]coumarin and 4H-chromene derivatives in aqueous media
Pradhan, Koyel; Paul, Sanjay; Das, Asish R.; Catalysis Science & Technology 4 (2014) 822–; doi:10.1039/c3cy00901g

data_1513599
_publ_section_title
;
 Magnetically retrievable nano crystalline CuFe2O4 catalyzed
 multi-component reaction: a facile and efficient synthesis of
 functionalized dihydropyrano[2,3-c]pyrazole, pyrano[3,2-c]coumarin and
 4H-chromene derivatives in aqueous media
;
_journal_issue                   3
_journal_name_full               'Catalysis Science &amp; Technology'
_journal_page_first              822
_journal_paper_doi               10.1039/c3cy00901g
_journal_volume                  4
_journal_year                    2014
_chemical_formula_sum            'C22 H22 N4 O7'
_chemical_formula_weight         454.44
_space_group_IT_number           2
_symmetry_space_group_name_Hall  '-P 1'
_symmetry_space_group_name_H-M   'P -1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                91.165(5)
_cell_angle_beta                 104.363(5)
_cell_angle_gamma                110.189(5)
_cell_formula_units_Z            2
_cell_length_a                   8.549(5)
_cell_length_b                   11.180(5)
_cell_length_c                   12.730(5)
_cell_measurement_temperature    293(2)
_cell_volume                     1098.7(9)
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_diffrn_ambient_temperature      293(2)
_diffrn_measured_fraction_theta_full 1.126
_diffrn_measured_fraction_theta_max 0.863
_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  0.1422
_diffrn_reflns_av_sigmaI/netI    0.1089
_diffrn_reflns_limit_h_max       10
_diffrn_reflns_limit_h_min       -10
_diffrn_reflns_limit_k_max       13
_diffrn_reflns_limit_k_min       -13
_diffrn_reflns_limit_l_max       15
_diffrn_reflns_limit_l_min       -15
_diffrn_reflns_number            7941
_diffrn_reflns_theta_full        26.73
_diffrn_reflns_theta_max         26.73
_diffrn_reflns_theta_min         1.66
_exptl_absorpt_coefficient_mu    0.104
_exptl_absorpt_correction_T_max  0.9876
_exptl_absorpt_correction_T_min  0.9795
_exptl_crystal_density_diffrn    1.374
_exptl_crystal_density_method    'not measured'
_exptl_crystal_F_000             476
_exptl_crystal_size_max          0.20
_exptl_crystal_size_mid          0.14
_exptl_crystal_size_min          0.12
_refine_diff_density_max         0.424
_refine_diff_density_min         -0.479
_refine_diff_density_rms         0.075
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.057
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     306
_refine_ls_number_reflns         4028
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.057
_refine_ls_R_factor_all          0.1002
_refine_ls_R_factor_gt           0.0699
_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^)+(0.1047P)^2^+0.1902P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1858
_refine_ls_wR_factor_ref         0.2153
_reflns_number_gt                2633
_reflns_number_total             4028
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c3cy00901g.txt
_cod_data_source_block           ardkp71013_0m
_cod_database_code               1513599