Stereoselective synthesis of backbone extended π-conjugated amino esters.
Nalawade, Sachin A.; Singh, Manjeet; Puneeth Kumar, DRGKoppalu R; Dey, Sanjit; Gopi, Hosahudya N.; Organic & biomolecular chemistry 21 (2023) 2586–2595; doi:10.1039/d3ob00090g

data_7159208
_publ_section_title
;
 Stereoselective synthesis of backbone extended &#x3c0;-conjugated amino
 esters.
;
_journal_issue                   12
_journal_name_full               'Organic &amp; biomolecular chemistry'
_journal_page_first              2586
_journal_page_last               2595
_journal_paper_doi               10.1039/d3ob00090g
_journal_volume                  21
_journal_year                    2023
_chemical_formula_moiety         'C17 H27 N O4'
_chemical_formula_sum            'C17 H27 N O4'
_chemical_formula_weight         309.40
_chemical_name_common
'(ethyl (2E,4E,6E)-8-((tert-butoxycarbonyl)amino)-8-methylnona-2,4,6-trienoate)'
_chemical_name_systematic
'(ethyl (2E,4E,6E)-8-((tert-butoxycarbonyl)amino)-8-methylnona-2,4,6-trienoate)'
_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
_audit_creation_method           SHELXL-2018/3
_audit_update_record
;
2022-10-17 deposited with the CCDC.	2023-03-01 downloaded from the CCDC.
;
_cell_angle_alpha                90
_cell_angle_beta                 105.188(10)
_cell_angle_gamma                90
_cell_formula_units_Z            8
_cell_length_a                   9.880(3)
_cell_length_b                   20.895(7)
_cell_length_c                   18.293(6)
_cell_measurement_reflns_used    9130
_cell_measurement_temperature    100(2)
_cell_measurement_theta_max      28.422
_cell_measurement_theta_min      1.949
_cell_volume                     3645(2)
_computing_structure_refinement  'SHELXL-2018/3 (Sheldrick, 2018)'
_computing_structure_solution    'SHELXT 2014/5 (Sheldrick, 2014)'
_diffrn_ambient_temperature      100(2)
_diffrn_measured_fraction_theta_full 1.000
_diffrn_measured_fraction_theta_max 0.995
_diffrn_measurement_device_type  microfocus
_diffrn_measurement_method       APEXIII
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.1187
_diffrn_reflns_av_unetI/netI     0.0925
_diffrn_reflns_Laue_measured_fraction_full 1.000
_diffrn_reflns_Laue_measured_fraction_max 0.995
_diffrn_reflns_limit_h_max       13
_diffrn_reflns_limit_h_min       -10
_diffrn_reflns_limit_k_max       27
_diffrn_reflns_limit_k_min       -27
_diffrn_reflns_limit_l_max       20
_diffrn_reflns_limit_l_min       -24
_diffrn_reflns_number            78922
_diffrn_reflns_point_group_measured_fraction_full 1.000
_diffrn_reflns_point_group_measured_fraction_max 0.995
_diffrn_reflns_theta_full        25.242
_diffrn_reflns_theta_max         28.422
_diffrn_reflns_theta_min         1.949
_diffrn_source                   'fine-focus sealed tube'
_exptl_absorpt_coefficient_mu    0.079
_exptl_absorpt_correction_T_max  0.989
_exptl_absorpt_correction_T_min  0.986
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   SADABS,2008
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.128
_exptl_crystal_description       rod-shape
_exptl_crystal_F_000             1344.0
_exptl_crystal_size_max          0.36
_exptl_crystal_size_mid          0.15
_exptl_crystal_size_min          0.14
_refine_diff_density_max         0.339
_refine_diff_density_min         -0.311
_refine_diff_density_rms         0.052
_refine_ls_extinction_coef       0.0030(10)
_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^
_refine_ls_extinction_method     'SHELXL-2018/3 (Sheldrick 2018)'
_refine_ls_goodness_of_fit_ref   0.726
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     410
_refine_ls_number_reflns         9130
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      0.726
_refine_ls_R_factor_all          0.1400
_refine_ls_R_factor_gt           0.0619
_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^)+(0.1840P)^2^+8.3513P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1811
_refine_ls_wR_factor_ref         0.2553
_reflns_Friedel_coverage         0.000
_reflns_number_gt                5045
_reflns_number_total             9130
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            d3ob00090g2.cif
_cod_data_source_block           8c
_cod_depositor_comments
'Adding full bibliography for 7159200--7159209.cif.'
_cod_original_sg_symbol_H-M      'P 21/c'
_cod_database_code               7159208
_shelx_shelxl_version_number     2018/3
_shelx_estimated_absorpt_t_min   0.986
_shelx_estimated_absorpt_t_max   0.989
_exptl_absorpt_special_details   multi-scan
_shelx_res_checksum              22921