Catalyst-free ring opening of azlactones in water microdroplets.
Naveen, Kumar; Rawat, Vishesh Singh; Verma, Rahul; Gnanamani, Elumalai; Chemical communications (Cambridge, England) 60 (2024) 13263–13266; doi:10.1039/d4cc04487h

data_7133880
_publ_section_title
;
 Catalyst-free ring opening of azlactones in water microdroplets.
;
_journal_issue                   90
_journal_name_full               'Chemical communications (Cambridge, England)'
_journal_page_first              13263
_journal_page_last               13266
_journal_paper_doi               10.1039/d4cc04487h
_journal_volume                  60
_journal_year                    2024
_chemical_formula_moiety         'C13 H16 N2 O4'
_chemical_formula_sum            'C13 H16 N2 O4'
_chemical_formula_weight         264.28
_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   geom
_atom_sites_solution_primary     dual
_audit_creation_date             2024-08-30
_audit_creation_method
;
Olex2 1.2-ac3
(compiled 2017.08.10 svn.r3458 for OlexSys, GUI svn.r5381)
;
_audit_update_record
;
2024-08-30 deposited with the CCDC.	2024-10-18 downloaded from the CCDC.
;
_cell_angle_alpha                90
_cell_angle_beta                 100.556(4)
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   13.5013(11)
_cell_length_b                   11.4480(10)
_cell_length_c                   9.0667(8)
_cell_measurement_reflns_used    3492
_cell_measurement_temperature    304(2)
_cell_measurement_theta_max      19.04
_cell_measurement_theta_min      2.35
_cell_volume                     1377.7(2)
_computing_cell_refinement       'SAINT V8.40B (?, 2016)'
_computing_data_reduction        'SAINT V8.40B (?, 2016)'
_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    'XT (Sheldrick, 2015)'
_diffrn_ambient_temperature      304.0
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.999
_diffrn_measurement_device_type  'Bruker APEX-IV CMOS'
_diffrn_measurement_method       '\f and \w scans'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0721
_diffrn_reflns_av_unetI/netI     0.0336
_diffrn_reflns_Laue_measured_fraction_full 0.999
_diffrn_reflns_Laue_measured_fraction_max 0.999
_diffrn_reflns_limit_h_max       16
_diffrn_reflns_limit_h_min       -16
_diffrn_reflns_limit_k_max       13
_diffrn_reflns_limit_k_min       -13
_diffrn_reflns_limit_l_max       10
_diffrn_reflns_limit_l_min       -10
_diffrn_reflns_number            33644
_diffrn_reflns_point_group_measured_fraction_full 0.999
_diffrn_reflns_point_group_measured_fraction_max 0.999
_diffrn_reflns_theta_full        25.046
_diffrn_reflns_theta_max         25.046
_diffrn_reflns_theta_min         2.349
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.095
_exptl_absorpt_correction_T_max  0.7452
_exptl_absorpt_correction_T_min  0.7041
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
'SADABS-2016/2 (Bruker,2016/2) was used for absorption correction. wR2(int) was 0.1040 before and 0.0649 after correction. The Ratio of minimum to maximum transmission is 0.9448. The \l/2 correction factor is Not present.'
_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    1.274
_exptl_crystal_description       block
_exptl_crystal_F_000             560
_exptl_crystal_size_max          0.146
_exptl_crystal_size_mid          0.049
_exptl_crystal_size_min          0.021
_refine_diff_density_max         0.142
_refine_diff_density_min         -0.145
_refine_diff_density_rms         0.032
_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     174
_refine_ls_number_reflns         2435
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.031
_refine_ls_R_factor_all          0.0682
_refine_ls_R_factor_gt           0.0398
_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^)+(0.0360P)^2^+0.3476P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0862
_refine_ls_wR_factor_ref         0.1037
_reflns_Friedel_coverage         0.000
_reflns_number_gt                1661
_reflns_number_total             2435
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            d4cc04487h2.cif
_cod_data_source_block           eg_vsr_dipep_1292_0ma_a
_cod_depositor_comments          'Adding full bibliography for 7133880.cif.'
_cod_database_code               7133880
_shelx_shelxl_version_number     2019/1
_shelx_estimated_absorpt_t_max   0.998
_shelx_estimated_absorpt_t_min   0.986
_olex2_refinement_description
;
1. Fixed Uiso
 At 1.2 times of:
  All C(H) groups, All C(H,H) groups, All N(H) groups
 At 1.5 times of:
  All C(H,H,H) groups
2.a Ternary CH refined with riding coordinates:
 C8(H8)
2.b Secondary CH2 refined with riding coordinates:
 C10(H10A,H10B)
2.c Aromatic/amide H refined with riding coordinates:
 N1(H1), N2(H2), C2(H2A), C3(H3), C4(H4), C5(H5), C6(H6)
2.d Idealised Me refined as rotating group:
 C12(H12A,H12B,H12C), C13(H13A,H13B,H13C)
;
_olex2_submission_special_instructions 'No special instructions were received'