Synthesis of Aza-Quaternary Centers via Pictet–Spengler Reactions of Ketonitrones
Lynch-Colameta, Tessa; Greta, Sarah; Snyder, Scott A.; Chemical Science  (2021) –; doi:10.1039/D1SC00882J

data_1561046
_publ_section_title
;
 Synthesis of Aza-Quaternary Centers via Pictet--Spengler Reactions of
 Ketonitrones
;
_journal_name_full               'Chemical Science'
_journal_paper_doi               10.1039/D1SC00882J
_journal_year                    2021
_chemical_formula_moiety         'C25 H22 N2 O2'
_chemical_formula_sum            'C25 H22 N2 O2'
_chemical_formula_weight         382.44
_space_group_crystal_system      monoclinic
_space_group_IT_number           14
_space_group_name_Hall           '-P 2ybc'
_space_group_name_H-M_alt        'P 1 21/c 1'
_atom_sites_solution_hydrogens   mixed
_atom_sites_solution_primary     dual
_atom_sites_solution_secondary   difmap
_audit_creation_date             2019-02-14
_audit_creation_method
;
Olex2 1.2
(compiled 2018.05.29 svn.r3508 for OlexSys, GUI svn.r5506)
;
_audit_update_record
;
2021-02-02 deposited with the CCDC.	2021-03-12 downloaded from the CCDC.
;
_cell_angle_alpha                90
_cell_angle_beta                 101.373(2)
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   9.5752(5)
_cell_length_b                   12.0481(7)
_cell_length_c                   17.8268(10)
_cell_measurement_reflns_used    9894
_cell_measurement_temperature    100(2)
_cell_measurement_theta_max      26.36
_cell_measurement_theta_min      2.33
_cell_volume                     2016.17(19)
_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 0.998
_diffrn_measurement_device_type  'Bruker D8 Venture'
_diffrn_measurement_method       '\f and \w scans'
_diffrn_radiation_monochromator  mirrors
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0400
_diffrn_reflns_av_unetI/netI     0.0184
_diffrn_reflns_Laue_measured_fraction_full 0.999
_diffrn_reflns_Laue_measured_fraction_max 0.998
_diffrn_reflns_limit_h_max       12
_diffrn_reflns_limit_h_min       -12
_diffrn_reflns_limit_k_max       15
_diffrn_reflns_limit_k_min       -15
_diffrn_reflns_limit_l_max       22
_diffrn_reflns_limit_l_min       -22
_diffrn_reflns_number            50007
_diffrn_reflns_point_group_measured_fraction_full 0.999
_diffrn_reflns_point_group_measured_fraction_max 0.998
_diffrn_reflns_theta_full        25.242
_diffrn_reflns_theta_max         26.505
_diffrn_reflns_theta_min         2.331
_diffrn_source                   'micro-focus X-ray tube'
_diffrn_source_type              'INCOATEC ImuS'
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.080
_exptl_absorpt_correction_T_max  0.7454
_exptl_absorpt_correction_T_min  0.6976
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
SADABS-2016/2 (Bruker,2016/2) was used for absorption correction. 
wR2(int) was 0.0757 before and 0.0454 after correction. 
The Ratio of minimum to maximum transmission is 0.9359. 
;
_exptl_crystal_colour            'clear colourless'
_exptl_crystal_colour_lustre     clear
_exptl_crystal_colour_primary    colourless
_exptl_crystal_density_diffrn    1.260
_exptl_crystal_description       block
_exptl_crystal_F_000             808
_exptl_crystal_size_max          0.307
_exptl_crystal_size_mid          0.108
_exptl_crystal_size_min          0.107
_refine_diff_density_max         0.271
_refine_diff_density_min         -0.183
_refine_diff_density_rms         0.036
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.023
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     267
_refine_ls_number_reflns         4167
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.023
_refine_ls_R_factor_all          0.0481
_refine_ls_R_factor_gt           0.0357
_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^)+(0.0362P)^2^+0.8078P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0812
_refine_ls_wR_factor_ref         0.0879
_reflns_Friedel_coverage         0.000
_reflns_number_gt                3413
_reflns_number_total             4167
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            d1sc00882j2.cif
_cod_data_source_block           0732_lc
_cod_database_code               1561046
_shelx_shelxl_version_number     2018/1
_shelx_estimated_absorpt_t_max   0.991
_shelx_estimated_absorpt_t_min   0.976
_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 Secondary CH2 refined with riding coordinates:
 C8(H8A,H8B), C9(H9A,H9B)
2.b Aromatic/amide H refined with riding coordinates:
 C1(H1), C2(H2A), C3(H3), C5(H5), C6(H6), C12(H12), C13(H13), C14(H14),
 C15(H15), C21(H21), C22(H22), C23(H23), C24(H24), C25(H25)
2.c Idealised Me refined as rotating group:
 C19(H19A,H19B,H19C)
;
_shelx_res_checksum              3433
_shelx_hkl_checksum              13450
_olex2_submission_special_instructions 'No special instructions were received'