Transposed Paternò-Büchi Reaction.
Kumarasamy, Elango; Raghunathan, Ramya; Kandappa, Sunil Kumar; Sreenithya, A.; Jockusch, Steffen; Sunoj, Raghavan B.; Sivaguru, J.; Journal of the American Chemical Society 139 (2017) 655–662; doi:10.1021/jacs.6b05936

data_4125741
_publ_section_title
;
 Transposed Patern\`o-B\"uchi Reaction.
;
_journal_issue                   2
_journal_name_full               'Journal of the American Chemical Society'
_journal_page_first              655
_journal_page_last               662
_journal_paper_doi               10.1021/jacs.6b05936
_journal_volume                  139
_journal_year                    2017
_chemical_absolute_configuration ad
_chemical_formula_moiety         'C16 H19 N O'
_chemical_formula_sum            'C16 H19 N O'
_chemical_formula_weight         241.32
_space_group_crystal_system      orthorhombic
_space_group_IT_number           19
_space_group_name_Hall           'P 2ac 2ab'
_space_group_name_H-M_alt        'P 21 21 21'
_symmetry_space_group_name_Hall  'P 2ac 2ab'
_symmetry_space_group_name_H-M   'P 21 21 21'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_audit_creation_date             2015-04-02
_audit_creation_method
;
Olex2 1.2
(compiled 2015.01.26 svn.r3150 for OlexSys, GUI svn.r4998)
;
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   9.3935(2)
_cell_length_b                   10.7059(3)
_cell_length_c                   12.8032(3)
_cell_measurement_reflns_used    7171
_cell_measurement_temperature    100
_cell_measurement_theta_max      67.196
_cell_measurement_theta_min      3.452
_cell_volume                     1287.56(5)
_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    'XS (Sheldrick, 2008)'
_diffrn_ambient_temperature      100
_diffrn_measured_fraction_theta_full 0.976
_diffrn_measured_fraction_theta_max 0.978
_diffrn_measurement_device_type  'Bruker APEX-II CCD'
_diffrn_measurement_method       '\f and \w scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_type           CuK\a
_diffrn_radiation_wavelength     1.54178
_diffrn_reflns_av_R_equivalents  0.0308
_diffrn_reflns_av_unetI/netI     0.0224
_diffrn_reflns_Laue_measured_fraction_full 0.976
_diffrn_reflns_Laue_measured_fraction_max 0.978
_diffrn_reflns_limit_h_max       11
_diffrn_reflns_limit_h_min       -11
_diffrn_reflns_limit_k_max       11
_diffrn_reflns_limit_k_min       -12
_diffrn_reflns_limit_l_max       15
_diffrn_reflns_limit_l_min       -15
_diffrn_reflns_number            10713
_diffrn_reflns_point_group_measured_fraction_full 0.962
_diffrn_reflns_point_group_measured_fraction_max 0.964
_diffrn_reflns_theta_full        67.679
_diffrn_reflns_theta_max         67.547
_diffrn_reflns_theta_min         5.386
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.599
_exptl_absorpt_correction_T_max  0.7529
_exptl_absorpt_correction_T_min  0.6418
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
SADABS-2008/1 (Bruker,2008) was used for absorption correction.
wR2(int) was 0.0815 before and 0.0415 after correction.
The Ratio of minimum to maximum transmission is 0.8524.
The \l/2 correction factor is 0.0015.
;
_exptl_crystal_colour            'clear colourless'
_exptl_crystal_colour_lustre     clear
_exptl_crystal_colour_primary    colourless
_exptl_crystal_density_diffrn    1.245
_exptl_crystal_description       plate
_exptl_crystal_F_000             520
_exptl_crystal_size_max          0.376
_exptl_crystal_size_mid          0.145
_exptl_crystal_size_min          0.044
_refine_diff_density_max         0.169
_refine_diff_density_min         -0.122
_refine_diff_density_rms         0.029
_refine_ls_abs_structure_details
;
 Flack x determined using 883 quotients [(I+)-(I-)]/[(I+)+(I-)]
 (Parsons, Flack and Wagner, Acta Cryst. B69 (2013) 249-259).
;
_refine_ls_abs_structure_Flack   0.06(9)
_refine_ls_extinction_coef       0.0031(5)
_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^
_refine_ls_extinction_method     SHELXL
_refine_ls_goodness_of_fit_ref   1.036
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     167
_refine_ls_number_reflns         2228
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.036
_refine_ls_R_factor_all          0.0268
_refine_ls_R_factor_gt           0.0258
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0334P)^2^+0.2609P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0657
_refine_ls_wR_factor_ref         0.0664
_reflns_Friedel_coverage         0.690
_reflns_Friedel_fraction_full    0.942
_reflns_Friedel_fraction_max     0.944
_reflns_number_gt                2168
_reflns_number_total             2228
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            ja6b05936_si_001.cif
_cod_data_source_block           4R,5R,7S-2a
_cod_original_cell_volume        1287.57(5)
_cod_database_code               4125741
_shelxl_version_number           2014-3
_shelx_estimated_absorpt_t_max   0.974
_shelx_estimated_absorpt_t_min   0.806
_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:
 C7(H7), C4(H4), C5(H5)
2.b Secondary CH2 refined with riding coordinates:
 C8(H8A,H8B), C6(H6A,H6B)
2.c Aromatic/amide H refined with riding coordinates:
 C13(H13), C12(H12), C14(H14)
2.d Idealised Me refined as rotating group:
 C16(H16A,H16B,H16C), C15(H15A,H15B,H15C), C17(H17A,H17B,H17C)
;
_shelx_res_checksum              73033
_shelx_hkl_checksum              28232
_olex2_date_sample_data_collection 'Nov st, 2012'
_olex2_date_sample_submission    'Oct 31st, 2012'
_olex2_submission_special_instructions 'No special instructions were received'