Decarboxylative, trienamine mediated cycloaddition for the synthesis of 3,4-dihydrocoumarin derivatives.
Albrecht, Anna; Bojanowski, Jan; Kot, Adrianna; Sieroń, Lesław; Organic & biomolecular chemistry 17 (2019) 4238–4242; doi:10.1039/c9ob00386j

data_7156760
_publ_section_title
;
 Decarboxylative, trienamine mediated cycloaddition for the synthesis of
 3,4-dihydrocoumarin derivatives.
;
_journal_issue                   17
_journal_name_full               'Organic &amp; biomolecular chemistry'
_journal_page_first              4238
_journal_page_last               4242
_journal_paper_doi               10.1039/c9ob00386j
_journal_volume                  17
_journal_year                    2019
_chemical_absolute_configuration ad
_chemical_formula_moiety         'C16 H16 O4'
_chemical_formula_sum            'C16 H16 O4'
_chemical_formula_weight         272.29
_chemical_name_systematic
;
2-((6aS,7S,10aR)-2-methoxy-6-oxo-6a,7,10,10a-tetrahydro-6H-benzo[c]chromen-7-yl)acetaldehyde
;
_space_group_IT_number           4
_space_group_name_Hall           'P 2yb'
_space_group_name_H-M_alt        'P 1 21 1'
_symmetry_cell_setting           monoclinic
_symmetry_Int_Tables_number      4
_symmetry_space_group_name_Hall  'P 2yb'
_symmetry_space_group_name_H-M   'P 1 21 1'
_atom_sites_solution_hydrogens   difmap
_audit_update_record
;
2019-02-10 deposited with the CCDC.    2019-03-28 downloaded from the CCDC.
;
_cell_angle_alpha                90
_cell_angle_beta                 97.7125(4)
_cell_angle_gamma                90
_cell_formula_units_Z            2
_cell_length_a                   7.92142(4)
_cell_length_b                   7.19257(4)
_cell_length_c                   11.36141(5)
_cell_measurement_reflns_used    32186
_cell_measurement_temperature    100.0(1)
_cell_measurement_theta_max      78.962
_cell_measurement_theta_min      5.616
_cell_volume                     641.465(6)
_diffrn_ambient_environment      N~2~
_diffrn_ambient_temperature      100.0(1)
_diffrn_detector                 'CCD plate'
_diffrn_detector_area_resol_mean 5.8140
_diffrn_detector_type            'Pilatus 300K'
_diffrn_measured_fraction_theta_full 0.998
_diffrn_measured_fraction_theta_max 0.998
_diffrn_measurement_device       'four-circle diffractometer'
_diffrn_measurement_device_type  'XtaLAB Synergy, Dualflex, Pilatus 300K'
_diffrn_measurement_method       '\w scans'
_diffrn_radiation_monochromator  mirror
_diffrn_radiation_probe          x-ray
_diffrn_radiation_type           'Cu K\a'
_diffrn_radiation_wavelength     1.54184
_diffrn_reflns_av_R_equivalents  0.0203
_diffrn_reflns_av_unetI/netI     0.0064
_diffrn_reflns_Laue_measured_fraction_full 0.998
_diffrn_reflns_Laue_measured_fraction_max 0.998
_diffrn_reflns_limit_h_max       9
_diffrn_reflns_limit_h_min       -9
_diffrn_reflns_limit_k_max       8
_diffrn_reflns_limit_k_min       -8
_diffrn_reflns_limit_l_max       13
_diffrn_reflns_limit_l_min       -13
_diffrn_reflns_number            34348
_diffrn_reflns_point_group_measured_fraction_full 0.991
_diffrn_reflns_point_group_measured_fraction_max 0.991
_diffrn_reflns_theta_full        67.684
_diffrn_reflns_theta_max         68.116
_diffrn_reflns_theta_min         5.636
_diffrn_source                   'micro-focus sealed X-ray tube'
_diffrn_source_type              'PhotonJet (Cu) X-ray Source'
_exptl_absorpt_coefficient_mu    0.831
_exptl_absorpt_correction_T_max  1.000
_exptl_absorpt_correction_T_min  0.339
_exptl_absorpt_correction_type   gaussian
_exptl_absorpt_process_details
;
CrysAlisPro 1.171.40.37a (Rigaku Oxford Diffraction, 2019)
Numerical absorption correction based on gaussian integration over
            a multifaceted crystal model
Empirical absorption correction using spherical harmonics,
 implemented in SCALE3 ABSPACK scaling algorithm.
;
_exptl_crystal_colour            Colourless
_exptl_crystal_density_diffrn    1.410
_exptl_crystal_density_method    'Not Measured'
_exptl_crystal_description       Plate
_exptl_crystal_F_000             288
_exptl_crystal_size_max          0.52
_exptl_crystal_size_mid          0.31
_exptl_crystal_size_min          0.14
_refine_diff_density_max         0.199
_refine_diff_density_min         -0.189
_refine_diff_density_rms         0.032
_refine_ls_abs_structure_details
;
 Flack x determined using 1046 quotients [(I+)-(I-)]/[(I+)+(I-)]
 (Parsons, Flack and Wagner, Acta Cryst. B69 (2013) 249-259).
;
_refine_ls_abs_structure_Flack   0.01(3)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.006
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     182
_refine_ls_number_reflns         2327
_refine_ls_number_restraints     1
_refine_ls_restrained_S_all      1.006
_refine_ls_R_factor_all          0.0238
_refine_ls_R_factor_gt           0.0237
_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^)+(0.0326P)^2^+0.1886P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0626
_refine_ls_wR_factor_ref         0.0626
_reflns_Friedel_coverage         0.828
_reflns_Friedel_fraction_full    0.982
_reflns_Friedel_fraction_max     0.982
_reflns_number_gt                2322
_reflns_number_total             2327
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            c9ob00386j2.cif
_cod_data_source_block           AA436
_cod_depositor_comments
'Adding full bibliography for 7156760--7156761.cif.'
_cod_original_sg_symbol_H-M      'P 21'
_cod_database_code               7156760
_exptl_absorpt_empirical_details
;
Empirical correction (ABSPACK) includes:
- Absorption correction using spherical harmonics
- Frame scaling
- Detector area scaling
;
_shelx_res_checksum              37580