Catalytic, highly enantio, and diastereoselective nitroso diels-alder reaction.
Yamamoto, Yuhei; Yamamoto, Hisashi; Journal of the American Chemical Society 126 (2004) 4128–4129; doi:10.1021/ja049849w

data_4122227
_publ_section_title
;
 Catalytic, highly enantio, and diastereoselective nitroso diels-alder
 reaction.
;
_journal_issue                   13
_journal_name_full               'Journal of the American Chemical Society'
_journal_page_first              4128
_journal_page_last               4129
_journal_paper_doi               10.1021/ja049849w
_journal_volume                  126
_journal_year                    2004
_chemical_formula_sum            'C18 H18 N2 O'
_chemical_formula_weight         278.34
_chemical_name_systematic
; 
 ? 
;
_space_group_IT_number           2
_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                86.769(4)
_cell_angle_beta                 84.258(4)
_cell_angle_gamma                74.577(4)
_cell_formula_units_Z            4
_cell_length_a                   8.5846(18)
_cell_length_b                   9.831(2)
_cell_length_c                   17.870(4)
_cell_measurement_temperature    100(2)
_cell_volume                     1445.8(5)
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      100(2)
_diffrn_measured_fraction_theta_full 0.997
_diffrn_measured_fraction_theta_max 0.997
_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  0.0237
_diffrn_reflns_av_sigmaI/netI    0.0298
_diffrn_reflns_limit_h_max       10
_diffrn_reflns_limit_h_min       -10
_diffrn_reflns_limit_k_max       11
_diffrn_reflns_limit_k_min       -11
_diffrn_reflns_limit_l_max       21
_diffrn_reflns_limit_l_min       -21
_diffrn_reflns_number            13953
_diffrn_reflns_theta_full        25.03
_diffrn_reflns_theta_max         25.03
_diffrn_reflns_theta_min         1.15
_exptl_absorpt_coefficient_mu    0.080
_exptl_crystal_density_diffrn    1.279
_exptl_crystal_density_method    'not measured'
_exptl_crystal_F_000             592
_refine_diff_density_max         0.223
_refine_diff_density_min         -0.181
_refine_diff_density_rms         0.039
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.230
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     381
_refine_ls_number_reflns         5112
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.230
_refine_ls_R_factor_all          0.0623
_refine_ls_R_factor_gt           0.0561
_refine_ls_shift/su_max          0.000
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0269P)^2^+0.8454P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1134
_refine_ls_wR_factor_ref         0.1160
_reflns_number_gt                4712
_reflns_number_total             5112
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ja049849wsi20040109_043031.cif
_cod_data_source_block           yama02s
_cod_original_cell_volume        1445.9(5)
_cod_database_code               4122227
_cod_duplicate_entry 4112403