Gold-Catalyzed Addition-<i>N</i>-Boc Cleavage-Cyclization of <i>N</i>,<i>O</i>-Acetal with Ynamides for Construction of 6-(<i>tert</i>-Butyldimethylsilyl)oxy-tetrahydropyrrolo[1,2-<i>c</i>][1,3]oxazin-1-ones.
Zhang, Yan-Xue; Chen, Ling-Yan; Sun, Jian-Ting; Si, Chang-Mei; Wei, Bang-Guo; The Journal of organic chemistry 85 (2020) 12603–12613; doi:10.1021/acs.joc.0c01776

data_4038835
_publ_section_title
;
 Gold-Catalyzed Addition-<i>N</i>-Boc Cleavage-Cyclization of
 <i>N</i>,<i>O</i>-Acetal with Ynamides for Construction of
 6-(<i>tert</i>-Butyldimethylsilyl)oxy-tetrahydropyrrolo[1,2-<i>c</i>][1,3]oxazin-1-ones.
;
_journal_issue                   19
_journal_name_full               'The Journal of organic chemistry'
_journal_page_first              12603
_journal_page_last               12613
_journal_paper_doi               10.1021/acs.joc.0c01776
_journal_volume                  85
_journal_year                    2020
_chemical_formula_sum            'C29 H36 N2 O5 Si'
_chemical_formula_weight         520.69
_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
_cell_angle_alpha                70.423(2)
_cell_angle_beta                 85.801(2)
_cell_angle_gamma                75.155(2)
_cell_formula_units_Z            2
_cell_length_a                   10.2581(6)
_cell_length_b                   11.4654(8)
_cell_length_c                   14.5949(9)
_cell_measurement_reflns_used    9897
_cell_measurement_temperature    157.(2)
_cell_measurement_theta_max      26.3664
_cell_measurement_theta_min      2.4564
_cell_volume                     1563.19(17)
_computing_cell_refinement       'SAINT V8.38A (Bruker AXS Inc., 2017)'
_computing_data_reduction        'SAINT V8.38A (Bruker AXS Inc., 2017)'
_computing_molecular_graphics    'shelXle (C.B. Huebschle, rev 924)'
_computing_structure_refinement  'SHELXL-2018/3 (Sheldrick, 2018)'
_computing_structure_solution    'SHELXT 2014/5 (Sheldrick, 2014)'
_diffrn_ambient_temperature      157.(2)
_diffrn_detector_area_resol_mean 7.3910
_diffrn_measured_fraction_theta_full 0.998
_diffrn_measured_fraction_theta_max 0.998
_diffrn_measurement_device_type  'd8 venture'
_diffrn_radiation_type           'mo k\a'
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0521
_diffrn_reflns_av_unetI/netI     0.0299
_diffrn_reflns_limit_h_max       12
_diffrn_reflns_limit_h_min       -12
_diffrn_reflns_limit_k_max       14
_diffrn_reflns_limit_k_min       -14
_diffrn_reflns_limit_l_max       18
_diffrn_reflns_limit_l_min       -18
_diffrn_reflns_number            42951
_diffrn_reflns_theta_full        26.44
_diffrn_reflns_theta_max         26.44
_diffrn_reflns_theta_min         2.46
_exptl_absorpt_coefficient_mu    0.111
_exptl_absorpt_correction_T_max  0.99
_exptl_absorpt_correction_T_min  0.93
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
SADABS-2016/2 - Bruker AXS area detector scaling and absorption correction
;
_exptl_crystal_colour            'clear light colourless'
_exptl_crystal_density_diffrn    1.106
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       plate
_exptl_crystal_F_000             556
_exptl_crystal_size_max          0.300
_exptl_crystal_size_mid          0.250
_exptl_crystal_size_min          0.070
_refine_diff_density_max         0.301
_refine_diff_density_min         -0.407
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.034
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     340
_refine_ls_number_reflns         6435
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.034
_refine_ls_R_factor_all          0.0562
_refine_ls_R_factor_gt           0.0426
_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^)+(0.0455P)^2^+0.6517P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1045
_refine_ls_wR_factor_ref         0.1137
_reflns_number_gt                5100
_reflns_number_total             6435
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            jo0c01776_si_001.cif
_cod_data_source_block           20190408zyx2_125
_cod_depositor_comments
;
The following automatic conversions were performed:

data item '_exptl_absorpt_correction_type' value 'Multi-Scan' was
changed to 'multi-scan' in accordance with the
/home/data/users/saulius/crontab/automatic-downloads/rss-feeds/ACS/lib/dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.2 last updated on
2011-04-26.

Automatic conversion script
Id: cif_fix_values 7556 2019-12-06 15:28:31Z antanas 

 Adding full bibliography for 4038835.cif.
;
_cod_database_code               4038835
_shelx_res_checksum              95506
_shelx_hkl_checksum              37889
_shelx_fab_checksum              67847