2-Silyloxy-1,2-oxazines, a New Type of Acetals of Conjugated Nitroso Alkenes
Alexander A. Tishkov; Alexey V. Lesiv; Yulya A. Khomutova; Yury A. Strelenko; Ivan D. Nesterov; Michael Yu. Antipin; Sema L. Ioffe; Scott E. Denmark; Journal of Organic Chemistry 68 (2003) 9477–9480; doi:10.1021/jo034669a

data_4022498
_publ_section_title
;
 2-Silyloxy-1,2-oxazines, a New Type of Acetals of
 Conjugated Nitroso Alkenes
;
_journal_name_full               'Journal of Organic Chemistry'
_journal_page_first              9477
_journal_page_last               9480
_journal_paper_doi               10.1021/jo034669a
_journal_volume                  68
_journal_year                    2003
_chemical_formula_sum            'C14 H19 N O4'
_chemical_formula_weight         265.30
_space_group_IT_number           2
_symmetry_cell_setting           triclinic
_symmetry_space_group_name_Hall  '-P 1'
_symmetry_space_group_name_H-M   'P -1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                87.022(10)
_cell_angle_beta                 71.556(13)
_cell_angle_gamma                85.261(12)
_cell_formula_units_Z            2
_cell_length_a                   7.831(4)
_cell_length_b                   8.097(4)
_cell_length_c                   11.193(6)
_cell_measurement_reflns_used    1024
_cell_measurement_temperature    110(2)
_cell_measurement_theta_max      27.221
_cell_measurement_theta_min      2.536
_cell_volume                     670.7(6)
_computing_cell_refinement       'SAINTPlus (Bruker, 1998a)'
_computing_data_collection       'SMART (Bruker, 1998b)'
_computing_data_reduction        'SAINTPlus (Bruker, 1998a)'
_computing_molecular_graphics    'SHELXTL ver. 5.1 (Sheldrick, 1998b)'
_computing_publication_material  'SHELXTL ver. 5.1 (Sheldrick, 1998b)'
_computing_structure_refinement  'SHELXTL ver. 5.1 (Sheldrick, 1998b)'
_computing_structure_solution    'SHELXTL ver. 5.1 (Sheldrick, 1998b)'
_diffrn_ambient_temperature      110(2)
_diffrn_measured_fraction_theta_full 0.869
_diffrn_measured_fraction_theta_max 0.869
_diffrn_measurement_device_type  'Bruker SMART 1000 CCD area detector'
_diffrn_measurement_method       'phi and omega scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0511
_diffrn_reflns_av_sigmaI/netI    0.0923
_diffrn_reflns_limit_h_max       10
_diffrn_reflns_limit_h_min       -10
_diffrn_reflns_limit_k_max       10
_diffrn_reflns_limit_k_min       -10
_diffrn_reflns_limit_l_max       14
_diffrn_reflns_limit_l_min       -14
_diffrn_reflns_number            6003
_diffrn_reflns_theta_full        28.07
_diffrn_reflns_theta_max         28.07
_diffrn_reflns_theta_min         1.92
_exptl_absorpt_coefficient_mu    0.096
_exptl_absorpt_correction_T_max  0.9685
_exptl_absorpt_correction_T_min  0.5237
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'SADABS (Sheldrick, 1998a)'
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.314
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       plate
_exptl_crystal_F_000             284
_exptl_crystal_size_max          0.6
_exptl_crystal_size_mid          0.4
_exptl_crystal_size_min          0.2
_refine_diff_density_max         0.429
_refine_diff_density_min         -0.248
_refine_diff_density_rms         0.069
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.881
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     248
_refine_ls_number_reflns         2840
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      0.881
_refine_ls_R_factor_all          0.1148
_refine_ls_R_factor_gt           0.0631
_refine_ls_shift/su_max          0.037
_refine_ls_shift/su_mean         0.002
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0970P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1461
_refine_ls_wR_factor_ref         0.1723
_reflns_number_gt                1453
_reflns_number_total             2840
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            jo034669asi20030519_115754.cif
_cod_data_source_block           alkylnitronate
_cod_database_code               4022498