Regioselective, cascade [3+2] annulation of β-naphthols (resorcinols) with Z-enoate propargylic alcohols: a novel entry for the synthesis of complex naphtho(benzo)furans.
Tharra, Prabhakararao; Baire, Beeraiah; Chemical communications (Cambridge, England) 52 (2016) 14290–14293; doi:10.1039/c6cc08126f

data_7125275
_publ_section_title
;
 Regioselective, cascade [3+2] annulation of \b-naphthols (resorcinols)
 with Z-enoate propargylic alcohols: a novel entry for the synthesis of
 complex naphtho(benzo)furans.
;
_journal_issue                   99
_journal_name_full               'Chemical communications (Cambridge, England)'
_journal_page_first              14290
_journal_page_last               14293
_journal_paper_doi               10.1039/c6cc08126f
_journal_volume                  52
_journal_year                    2016
_chemical_formula_sum            'C26 H24 O3'
_chemical_formula_weight         384.45
_space_group_crystal_system      monoclinic
_space_group_IT_number           14
_space_group_name_Hall           '-P 2yn'
_space_group_name_H-M_alt        'P 1 21/n 1'
_atom_sites_solution_hydrogens   geom
_audit_creation_method           SHELXL-2014/7
_audit_update_record
;
2016-09-23 deposited with the CCDC.
2016-11-15 downloaded from the CCDC.
;
_cell_angle_alpha                90
_cell_angle_beta                 92.802(4)
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   8.9587(7)
_cell_length_b                   8.4815(5)
_cell_length_c                   27.445(2)
_cell_measurement_reflns_used    5601
_cell_measurement_temperature    296(2)
_cell_measurement_theta_max      26.51
_cell_measurement_theta_min      2.43
_cell_volume                     2082.9(3)
_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-2014/7 (Sheldrick, 2014)'
_computing_structure_solution    'SHELXS-97 (Sheldrick 2008)'
_diffrn_ambient_temperature      296(2)
_diffrn_measured_fraction_theta_full 1.000
_diffrn_measured_fraction_theta_max 1.000
_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  0.0197
_diffrn_reflns_av_unetI/netI     0.0215
_diffrn_reflns_Laue_measured_fraction_full 1.000
_diffrn_reflns_Laue_measured_fraction_max 1.000
_diffrn_reflns_limit_h_max       10
_diffrn_reflns_limit_h_min       -10
_diffrn_reflns_limit_k_max       9
_diffrn_reflns_limit_k_min       -10
_diffrn_reflns_limit_l_max       32
_diffrn_reflns_limit_l_min       -32
_diffrn_reflns_number            14082
_diffrn_reflns_point_group_measured_fraction_full 1.000
_diffrn_reflns_point_group_measured_fraction_max 1.000
_diffrn_reflns_theta_full        24.992
_diffrn_reflns_theta_max         24.992
_diffrn_reflns_theta_min         1.486
_exptl_absorpt_coefficient_mu    0.079
_exptl_absorpt_correction_T_max  0.992
_exptl_absorpt_correction_T_min  0.983
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'SADABS V2014/5(Bruker AXS.Inc)'
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.226
_exptl_crystal_description       Rectangular
_exptl_crystal_F_000             816
_exptl_crystal_size_max          0.220
_exptl_crystal_size_mid          0.120
_exptl_crystal_size_min          0.100
_refine_diff_density_max         0.243
_refine_diff_density_min         -0.216
_refine_diff_density_rms         0.033
_refine_ls_extinction_coef       0.0030(8)
_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^
_refine_ls_extinction_method     'SHELXL-2014/7 (Sheldrick 2014'
_refine_ls_goodness_of_fit_ref   1.045
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     285
_refine_ls_number_reflns         3674
_refine_ls_number_restraints     1
_refine_ls_restrained_S_all      1.045
_refine_ls_R_factor_all          0.0637
_refine_ls_R_factor_gt           0.0471
_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^)+(0.0544P)^2^+0.8479P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1169
_refine_ls_wR_factor_ref         0.1311
_reflns_Friedel_coverage         0.000
_reflns_number_gt                2834
_reflns_number_total             3674
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            c6cc08126f2.cif
_cod_data_source_block           2A
_cod_original_sg_symbol_H-M      'P 21/n'
_cod_database_code               7125275
_shelx_shelxl_version_number     2014/7
_shelx_estimated_absorpt_t_min   0.983
_shelx_estimated_absorpt_t_max   0.992
_shelx_res_checksum              97164