An Unconventional Redox Cross Claisen Condensation-Aromatization of 4-Hydroxyprolines with Ketones.
Tang, Mi; Sun, Rengwei; Li, Hao; Yu, Xinhong; Wang, Wei; The Journal of organic chemistry 82 (2017) 8419–8425; doi:10.1021/acs.joc.7b01033

data_4032813
_publ_section_title
;
 An Unconventional Redox Cross Claisen Condensation-Aromatization of
 4-Hydroxyprolines with Ketones.
;
_journal_issue                   16
_journal_name_full               'The Journal of organic chemistry'
_journal_page_first              8419
_journal_page_last               8425
_journal_paper_doi               10.1021/acs.joc.7b01033
_journal_volume                  82
_journal_year                    2017
_chemical_formula_moiety         'C12 H15 N O'
_chemical_formula_sum            'C12 H15 N O'
_chemical_formula_weight         189.25
_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'
_symmetry_space_group_name_Hall  '-P 2yn'
_symmetry_space_group_name_H-M   'P 1 21/n 1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_audit_creation_date             2015-01-14
_audit_creation_method
;
Olex2 1.2
(compiled 2014.07.22 svn.r2960 for OlexSys, GUI svn.r4862)
;
_cell_angle_alpha                90
_cell_angle_beta                 113.549(3)
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   10.5537(16)
_cell_length_b                   8.9576(13)
_cell_length_c                   11.7956(19)
_cell_measurement_reflns_used    1797
_cell_measurement_temperature    130
_cell_measurement_theta_max      27.91
_cell_measurement_theta_min      2.95
_cell_volume                     1022.2(3)
_computing_cell_refinement       'SAINT v7.68A (Bruker, 2009)'
_computing_data_reduction        'SAINT v7.68A (Bruker, 2009)'
_computing_molecular_graphics    'Olex2 (Dolomanov et al., 2009)'
_computing_publication_material  'Olex2 (Dolomanov et al., 2009)'
_computing_structure_refinement  'XL (Sheldrick, 2008)'
_computing_structure_solution    'ShelXS (Sheldrick, 2008)'
_diffrn_ambient_temperature      130
_diffrn_measured_fraction_theta_full 1.000
_diffrn_measured_fraction_theta_max 0.997
_diffrn_measurement_device_type  'Bruker APEX-II CCD'
_diffrn_measurement_method       '\f and \w scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0395
_diffrn_reflns_av_unetI/netI     0.0442
_diffrn_reflns_Laue_measured_fraction_full 1.000
_diffrn_reflns_Laue_measured_fraction_max 0.997
_diffrn_reflns_limit_h_max       15
_diffrn_reflns_limit_h_min       -15
_diffrn_reflns_limit_k_max       10
_diffrn_reflns_limit_k_min       -12
_diffrn_reflns_limit_l_max       16
_diffrn_reflns_limit_l_min       -16
_diffrn_reflns_number            10096
_diffrn_reflns_point_group_measured_fraction_full 1.000
_diffrn_reflns_point_group_measured_fraction_max 0.997
_diffrn_reflns_theta_full        26.000
_diffrn_reflns_theta_max         30.645
_diffrn_reflns_theta_min         2.193
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.078
_exptl_absorpt_correction_T_max  0.7461
_exptl_absorpt_correction_T_min  0.6801
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
SADABS-2008/1 (Bruker,2008) was used for absorption correction.
wR2(int) was 0.0752 before and 0.0453 after correction.
The Ratio of minimum to maximum transmission is 0.9115.
The \l/2 correction factor is 0.0015.
;
_exptl_crystal_colour            colourless
_exptl_crystal_colour_primary    colourless
_exptl_crystal_density_diffrn    1.230
_exptl_crystal_description       block
_exptl_crystal_F_000             408
_exptl_crystal_size_max          0.25
_exptl_crystal_size_mid          0.2
_exptl_crystal_size_min          0.12
_refine_diff_density_max         0.317
_refine_diff_density_min         -0.297
_refine_diff_density_rms         0.051
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.031
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     128
_refine_ls_number_reflns         3146
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.031
_refine_ls_R_factor_all          0.0734
_refine_ls_R_factor_gt           0.0506
_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^)+(0.0688P)^2^+0.0628P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1206
_refine_ls_wR_factor_ref         0.1330
_reflns_Friedel_coverage         0.000
_reflns_number_gt                2286
_reflns_number_total             3146
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            jo7b01033_si_002.cif
_cod_data_source_block           mo_dm15050_0m
_cod_database_code               4032813
_shelxl_version_number           2014-3
_shelx_estimated_absorpt_t_max   0.991
_shelx_estimated_absorpt_t_min   0.981
_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:
 C6(H6), C8(H8), C11(H11)
2.b Secondary CH2 refined with riding coordinates:
 C7(H7A,H7B), C9(H9A,H9B), C10(H10A,H10B)
2.c Aromatic/amide H refined with riding coordinates:
 C1(H1), C2(H2), C3(H3)
2.d Idealised Me refined as rotating group:
 C12(H12A,H12B,H12C)
;
_shelx_res_checksum              38905
_shelx_hkl_checksum              58167
_olex2_submission_special_instructions 'No special instructions were received'