Thermally Induced [3 + 2] Cycloaddition of Alkynyl-Tethered Diazoamides: Synthetic and Mechanistic Insights.
Zhang, Cheng; Huang, Jingjing; Qiu, Lihua; Xu, Xinfang; Organic letters 18 (2016) 6208–6211; doi:10.1021/acs.orglett.6b03288

data_1555968
_publ_section_title
;
 Thermally Induced [3 + 2] Cycloaddition of Alkynyl-Tethered Diazoamides:
 Synthetic and Mechanistic Insights.
;
_journal_issue                   23
_journal_name_full               'Organic letters'
_journal_page_first              6208
_journal_page_last               6211
_journal_paper_doi               10.1021/acs.orglett.6b03288
_journal_volume                  18
_journal_year                    2016
_chemical_formula_moiety         'C24 H16 N2 O2'
_chemical_formula_sum            'C24 H16 N2 O2'
_chemical_formula_weight         364.39
_space_group_crystal_system      triclinic
_space_group_IT_number           2
_space_group_name_Hall           '-P 1'
_space_group_name_H-M_alt        'P -1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_audit_creation_date             2016-10-23
_audit_creation_method
;
Olex2 1.2-alpha
(compiled 2016.10.10 svn.r3347 for OlexSys, GUI svn.r5252)
;
_cell_angle_alpha                77.086(3)
_cell_angle_beta                 77.386(4)
_cell_angle_gamma                87.983(4)
_cell_formula_units_Z            2
_cell_length_a                   7.1492(4)
_cell_length_b                   10.4607(5)
_cell_length_c                   12.1607(6)
_cell_measurement_reflns_used    3688
_cell_measurement_temperature    296
_cell_measurement_theta_max      24.829
_cell_measurement_theta_min      2.352
_cell_volume                     864.96(8)
_computing_cell_refinement       'SAINT v8.34A (Bruker, 2013)'
_computing_data_reduction        'SAINT v8.34A (Bruker, 2013)'
_computing_molecular_graphics    'Olex2 (Dolomanov et al., 2009)'
_computing_publication_material  'Olex2 (Dolomanov et al., 2009)'
_computing_structure_refinement  'ShelXL (Sheldrick, 2015)'
_computing_structure_solution    'ShelXS (Sheldrick, 2008)'
_diffrn_ambient_temperature      296.15
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.996
_diffrn_measurement_device_type  'Bruker APEX-II CCD'
_diffrn_measurement_method       '\f and \w scans'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0703
_diffrn_reflns_av_unetI/netI     0.0665
_diffrn_reflns_Laue_measured_fraction_full 0.999
_diffrn_reflns_Laue_measured_fraction_max 0.996
_diffrn_reflns_limit_h_max       8
_diffrn_reflns_limit_h_min       -8
_diffrn_reflns_limit_k_max       12
_diffrn_reflns_limit_k_min       -12
_diffrn_reflns_limit_l_max       14
_diffrn_reflns_limit_l_min       -14
_diffrn_reflns_number            9868
_diffrn_reflns_point_group_measured_fraction_full 0.999
_diffrn_reflns_point_group_measured_fraction_max 0.996
_diffrn_reflns_theta_full        25.242
_diffrn_reflns_theta_max         25.426
_diffrn_reflns_theta_min         2.352
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.090
_exptl_absorpt_correction_type   none
_exptl_crystal_colour            'clear light colourless'
_exptl_crystal_colour_lustre     clear
_exptl_crystal_colour_modifier   light
_exptl_crystal_colour_primary    colourless
_exptl_crystal_density_diffrn    1.399
_exptl_crystal_description       block
_exptl_crystal_F_000             380
_exptl_crystal_size_max          0.33
_exptl_crystal_size_mid          0.23
_exptl_crystal_size_min          0.17
_refine_diff_density_max         0.261
_refine_diff_density_min         -0.398
_refine_diff_density_rms         0.108
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.041
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     253
_refine_ls_number_reflns         3193
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.041
_refine_ls_R_factor_all          0.1142
_refine_ls_R_factor_gt           0.0535
_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^)+(0.0747P)^2^] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1162
_refine_ls_wR_factor_ref         0.1524
_reflns_Friedel_coverage         0.000
_reflns_number_gt                1881
_reflns_number_total             3193
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            ol6b03288_si_002.cif
_cod_data_source_block           b160325a_0m_a
_cod_database_code               1555968
_shelx_estimated_absorpt_t_max   0.985
_shelx_estimated_absorpt_t_min   0.971
_olex2_refinement_description
;
1. Fixed Uiso
 At 1.2 times of:
  All C(H) groups, All C(H,H) groups
2.a Secondary CH2 refined with riding coordinates:
 C18(H18A,H18B)
2.b Aromatic/amide H refined with riding coordinates:
 C1(H1), C2(H2), C3(H3), C4(H4), C9(H9), C10(H10), C11(H11), C12(H12),
 C13(H13), C20(H20), C21(H21), C22(H22), C23(H23), C24(H24)
;
_shelx_shelxl_version_number     2014/7
_olex2_submission_special_instructions 'No special instructions were received'