Asymmetric pyrone Diels–Alder reactions enabled by dienamine catalysis
Cole, Charles J. F.; Fuentes, Lilia; Snyder, Scott A.; Chemical Science 11 (2020) 2175–2180; doi:10.1039/C9SC05738B

data_1557126
_publ_section_title
;
 Asymmetric pyrone Diels--Alder reactions enabled by dienamine catalysis
;
_journal_issue                   8
_journal_name_full               'Chemical Science'
_journal_page_first              2175
_journal_page_last               2180
_journal_paper_doi               10.1039/C9SC05738B
_journal_volume                  11
_journal_year                    2020
_chemical_formula_moiety         'C18 H16 O5'
_chemical_formula_sum            'C18 H16 O5'
_chemical_formula_weight         312.31
_space_group_crystal_system      monoclinic
_space_group_IT_number           4
_space_group_name_Hall           'P 2yb'
_space_group_name_H-M_alt        'P 1 21 1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     dual
_atom_sites_solution_secondary   difmap
_audit_creation_date             2018-10-24
_audit_creation_method
;
Olex2 1.2
(compiled 2018.05.29 svn.r3508 for OlexSys, GUI svn.r5506)
;
_audit_update_record
;
2019-11-11 deposited with the CCDC.	2020-01-22 downloaded from the CCDC.
;
_cell_angle_alpha                90
_cell_angle_beta                 90.7230(10)
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   11.2987(6)
_cell_length_b                   10.6941(6)
_cell_length_c                   11.9582(7)
_cell_measurement_reflns_used    9855
_cell_measurement_temperature    100(2)
_cell_measurement_theta_max      28.81
_cell_measurement_theta_min      2.46
_cell_volume                     1444.79(14)
_computing_cell_refinement       'SAINT V.8.35A (Bruker AXS Inc., 2013)'
_computing_data_collection       'APEX3 v.2015.9-0 (Bruker AXS Inc., 2015)'
_computing_data_reduction        'SAINT V.8.35A (Bruker AXS Inc., 2013)'
_computing_molecular_graphics
;
OLEX2: a complete structure solution, refinement and analysis program 
Dolomanov et al., 2009

Mercury: visualization and analysis of crystal structures
Macrae, et al., 2006

O. V. Dolomanov, L. J. Bourhis, R. J. Gildea, J. A. K. Howard and H. Puschmann.
J. Appl. Cryst. (2009). 42, 339-341;

C. F. Macrae, P. R. Edgington, P. McCabe, E. Pidcock, G. P. Shields, R. Taylor,
M. Towler and J. van de Streek, J. Appl. Cryst. (2006). 39, 453-457.
;
_computing_publication_material
;
 APEX3 v.2015.5-2 (Bruker AXS Inc., 2015)
 OLEX2 (Dolomanov et al., 2009)
;
_computing_structure_refinement  'XL-2018/3 (Sheldrick, 2015b)'
_computing_structure_solution    'XT 2018/2 (Sheldrick, 2015a)'
_diffrn_ambient_temperature      100(2)
_diffrn_detector                 'Bruker PHOTON 100'
_diffrn_detector_area_resol_mean 10.4167
_diffrn_detector_type            CMOS
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.999
_diffrn_measurement_device_type  D8Venture
_diffrn_measurement_method       'omega scans'
_diffrn_radiation_monochromator  mirrors
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0297
_diffrn_reflns_av_unetI/netI     0.0157
_diffrn_reflns_Laue_measured_fraction_full 0.999
_diffrn_reflns_Laue_measured_fraction_max 0.999
_diffrn_reflns_limit_h_max       15
_diffrn_reflns_limit_h_min       -15
_diffrn_reflns_limit_k_max       14
_diffrn_reflns_limit_k_min       -14
_diffrn_reflns_limit_l_max       16
_diffrn_reflns_limit_l_min       -16
_diffrn_reflns_number            62679
_diffrn_reflns_point_group_measured_fraction_full 1.000
_diffrn_reflns_point_group_measured_fraction_max 0.998
_diffrn_reflns_theta_full        25.242
_diffrn_reflns_theta_max         28.820
_diffrn_reflns_theta_min         2.465
_diffrn_source                   'micro-focus X-ray tube'
_diffrn_source_type              'INCOATEC ImuS'
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.105
_exptl_absorpt_correction_T_max  0.7458
_exptl_absorpt_correction_T_min  0.6829
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
SADABS-2016/2 (Bruker,2016/2) was used for absorption correction. 
wR2(int) was 0.1409 before and 0.0424 after correction. 
The Ratio of minimum to maximum transmission is 0.9157. 
;
_exptl_crystal_colour            colourless
_exptl_crystal_colour_primary    colourless
_exptl_crystal_density_diffrn    1.436
_exptl_crystal_description       block
_exptl_crystal_F_000             656
_exptl_crystal_size_max          0.38
_exptl_crystal_size_mid          0.24
_exptl_crystal_size_min          0.21
_refine_diff_density_max         0.329
_refine_diff_density_min         -0.187
_refine_diff_density_rms         0.044
_refine_ls_abs_structure_details
;
 Flack x determined using 3303 quotients [(I+)-(I-)]/[(I+)+(I-)]
 (Parsons, Flack and Wagner, Acta Cryst. B69 (2013) 249-259).
;
_refine_ls_abs_structure_Flack   0.07(13)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.039
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     417
_refine_ls_number_reflns         7546
_refine_ls_number_restraints     1
_refine_ls_restrained_S_all      1.039
_refine_ls_R_factor_all          0.0334
_refine_ls_R_factor_gt           0.0312
_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^)+(0.0502P)^2^+0.2469P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0772
_refine_ls_wR_factor_ref         0.0787
_reflns_Friedel_coverage         0.899
_reflns_Friedel_fraction_full    1.000
_reflns_Friedel_fraction_max     0.997
_reflns_number_gt                7206
_reflns_number_total             7546
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            c9sc05738b2.cif
_cod_data_source_block           0693_cole
_cod_depositor_comments
;Adding full bibliography for 1557123--1557130.cif.

 Adding full bibliography for 1557123--1557130.cif.
;
_cod_database_code               1557126
_shelx_shelxl_version_number     2018/3
_shelx_estimated_absorpt_t_max   0.978
_shelx_estimated_absorpt_t_min   0.961
_olex2_refinement_description
;
1. Fixed Uiso
 At 1.2 times of:
  All C(H) groups, All C(H,H) groups
 At 1.5 times of:
  All C(H,H,H) groups
2.a Ternary CH refined with riding coordinates:
 C8(H8), C10(H10), C12(H12), C15(H15), C16(H16), C26(H26), C28(H28), C30(H30),
 C33(H33), C34(H34)
2.b Secondary CH2 refined with riding coordinates:
 C9(H9A,H9B), C13(H13A,H13B), C27(H27A,H27B), C31(H31A,H31B)
2.c Aromatic/amide H refined with riding coordinates:
 C1(H1), C2(H2), C3(H3), C4(H4), C19(H19), C20(H20), C21(H21), C22(H22)
2.d Idealised Me refined as rotating group:
 C18(H18A,H18B,H18C), C36(H36A,H36B,H36C)
;
_shelx_res_checksum              3125
_olex2_submission_special_instructions 'No special instructions were received'