Deoxygenative dual CO2 conversions: methylenation and switchable N-formylation/N-methylation of tryptamines
Takaishi, Kazuto; Morishita, Hajime; Iwaki, Kosuke; Ema, Tadashi; Green Chemistry 27 (2025) 5359–5365; doi:10.1039/D5GC00942A

data_7250272
_publ_section_title
;
 Deoxygenative dual CO2 conversions: methylenation and switchable
 N-formylation/N-methylation of tryptamines
;
_journal_issue                   18
_journal_name_full               'Green Chemistry'
_journal_page_first              5359
_journal_page_last               5365
_journal_paper_doi               10.1039/D5GC00942A
_journal_volume                  27
_journal_year                    2025
_chemical_formula_moiety         'C12 H14 N2'
_chemical_formula_sum            'C12 H14 N2'
_chemical_formula_weight         186.25
_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'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     dual
_audit_creation_date             2024-05-24
_audit_creation_method
;
Olex2 1.5
(compiled 2024.02.16 svn.r378c4104 for OlexSys, GUI svn.r6928)
;
_audit_update_record
;
2024-12-28 deposited with the CCDC.	2025-04-07 downloaded from the CCDC.
;
_cell_angle_alpha                90
_cell_angle_beta                 108.117(6)
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   12.4491(7)
_cell_length_b                   6.2533(2)
_cell_length_c                   13.2178(7)
_cell_measurement_reflns_used    9100
_cell_measurement_temperature    100
_cell_measurement_theta_max      30.8800
_cell_measurement_theta_min      1.9550
_cell_volume                     977.97(9)
_computing_cell_refinement       'CrysAlisPro 1.171.43.90 (Rigaku OD, 2023)'
_computing_data_collection       'CrystalClear-SM Expert 2.1 b46 (Rigaku, 2016)'
_computing_data_reduction        'CrysAlisPro 1.171.43.90 (Rigaku OD, 2023)'
_computing_molecular_graphics    'Olex2 1.5 (Dolomanov et al., 2009)'
_computing_publication_material  'Olex2 1.5 (Dolomanov et al., 2009)'
_computing_structure_refinement  'SHELXL-2018/3 (Sheldrick, 2018)'
_computing_structure_solution    'SHELXT 2018/2 (Sheldrick, 2018)'
_diffrn_ambient_temperature      100
_diffrn_detector                 CCD
_diffrn_detector_area_resol_mean 7.111
_diffrn_detector_type            'Rigaku Saturn724+ area detector'
_diffrn_measured_fraction_theta_full 1.000
_diffrn_measured_fraction_theta_max 0.936
_diffrn_measurement_details
;
List of Runs (angles in degrees, time in seconds):

  # Type    Start    End  Width  t~exp~   \w     \q     \k     \f   Frames
  1  \w   -105.00  75.00   0.50    1.00    --  -15.00  45.00   0.00  360
  2  \w   -105.00  75.00   0.50    1.00    --  -15.00  45.00  90.00  360
  3  \w   -105.00  75.00   0.50    1.00    --  -15.00  45.00 180.00  360
  4  \w   -105.00  75.00   0.50    1.00    --  -15.00  45.00 270.00  360
;
_diffrn_measurement_device       'AFC11 SATURN724+ Right'
_diffrn_measurement_device_type  'Rigaku Varimax with Saturn'
_diffrn_measurement_method       '\w scans'
_diffrn_orient_matrix_type
'CrysAlisPro convention (1999,Acta A55,543-557)'
_diffrn_orient_matrix_UB_11      0.0240892000
_diffrn_orient_matrix_UB_12      -0.1038452000
_diffrn_orient_matrix_UB_13      0.0068762000
_diffrn_orient_matrix_UB_21      -0.0280711000
_diffrn_orient_matrix_UB_22      -0.0237612000
_diffrn_orient_matrix_UB_23      0.0378508000
_diffrn_orient_matrix_UB_31      -0.0471680000
_diffrn_orient_matrix_UB_32      -0.0390120000
_diffrn_orient_matrix_UB_33      -0.0413196000
_diffrn_radiation_collimation    0.3
_diffrn_radiation_monochromator  'multi-layer mirror optics'
_diffrn_radiation_probe          x-ray
_diffrn_radiation_type           'Mo K\a'
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.1092
_diffrn_reflns_av_unetI/netI     0.0583
_diffrn_reflns_Laue_measured_fraction_full 1.000
_diffrn_reflns_Laue_measured_fraction_max 0.936
_diffrn_reflns_limit_h_max       16
_diffrn_reflns_limit_h_min       -17
_diffrn_reflns_limit_k_max       8
_diffrn_reflns_limit_k_min       -8
_diffrn_reflns_limit_l_max       18
_diffrn_reflns_limit_l_min       -18
_diffrn_reflns_number            18579
_diffrn_reflns_point_group_measured_fraction_full 1.000
_diffrn_reflns_point_group_measured_fraction_max 0.936
_diffrn_reflns_theta_full        25.242
_diffrn_reflns_theta_max         30.778
_diffrn_reflns_theta_min         1.963
_diffrn_source                   'rotating anode X-ray generator'
_diffrn_source_current           24.0
_diffrn_source_power             1.2
_diffrn_source_target            Mo
_diffrn_source_type              'MicroMax 007'
_diffrn_source_voltage           50.0
_exptl_absorpt_coefficient_mu    0.076
_exptl_absorpt_correction_T_max  1.00000
_exptl_absorpt_correction_T_min  0.70596
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
CrysAlisPro 1.171.43.90 (Rigaku Oxford Diffraction, 2023)
Empirical absorption correction using spherical harmonics,
implemented in SCALE3 ABSPACK scaling algorithm.
;
_exptl_crystal_colour            colourless
_exptl_crystal_colour_primary    colourless
_exptl_crystal_density_diffrn    1.265
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       prism
_exptl_crystal_F_000             400
_exptl_crystal_size_max          0.15
_exptl_crystal_size_mid          0.04
_exptl_crystal_size_min          0.02
_refine_diff_density_max         0.351
_refine_diff_density_min         -0.447
_refine_diff_density_rms         0.063
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.023
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     128
_refine_ls_number_reflns         2840
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.023
_refine_ls_R_factor_all          0.0822
_refine_ls_R_factor_gt           0.0577
_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^)+(0.0729P)^2^+0.3967P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1374
_refine_ls_wR_factor_ref         0.1525
_reflns_Friedel_coverage         0.000
_reflns_number_gt                2141
_reflns_number_total             2840
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            d5gc00942a2.cif
_cod_data_source_block           takaishi_autored_CCDC1
_cod_depositor_comments
'Adding full bibliography for 7250271--7250272.cif.'
_cod_database_code               7250272
_shelx_shelxl_version_number     2018/3
_shelx_estimated_absorpt_t_max   0.998
_shelx_estimated_absorpt_t_min   0.989
_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 Secondary CH2 refined with riding coordinates:
 C2(H2A,H2B), C3(H3A,H3B), C4(H4A,H4B)
2.b Aromatic/amide H refined with riding coordinates:
 N1(H1), C7(H7), C8(H8), C9(H9), C10(H10)
2.c Idealised Me refined as rotating group:
 C12(H12A,H12B,H12C)
;
_shelx_res_checksum              2134
_shelx_hkl_checksum              64439
_olex2_exptl_crystal_mounting_method loop
_olex2_submission_special_instructions 'No special instructions were received'
_oxdiff_exptl_absorpt_empirical_details
;
Empirical correction (ABSPACK) includes:
- Absorption correction using spherical harmonics
- Frame scaling
- Detector area scaling
;
_oxdiff_exptl_absorpt_empirical_full_max 3.227
_oxdiff_exptl_absorpt_empirical_full_min 0.527