Diastereoselective alpha-C-H functionalization of aliphatic N-heterocycles: an efficient route to ring fused oxazines
Sujit Mahato; Surajit Haldar; Chandan K. Jana; Chem.Commun. 50 (2014) 332–; doi:10.1039/c3cc46191b

data_7110186
_publ_section_title
;
 Diastereoselective alpha-C-H functionalization of aliphatic
 N-heterocycles: an efficient route to ring fused oxazines
;
_journal_name_full               Chem.Commun.
_journal_page_first              332
_journal_paper_doi               10.1039/c3cc46191b
_journal_volume                  50
_journal_year                    2014
_chemical_compound_source        synthesis
_chemical_formula_moiety         'C20 H18 N2 O'
_chemical_formula_sum            'C20 H18 N2 O'
_chemical_formula_weight         302.36
_chemical_name_systematic
rac-(7aS,11S)-11-Pyridine-2-yl-7a,8,9,10-tetrahydro-11H-7-oxa-10a-aza-cyclopenta[b]phenanthrene
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_symmetry_Int_Tables_number      14
_symmetry_space_group_name_Hall  '-P 2ybc'
_symmetry_space_group_name_H-M   'P 1 21/c 1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                90.00
_cell_angle_beta                 101.988(3)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   10.5276(5)
_cell_length_b                   8.3530(4)
_cell_length_c                   18.0400(8)
_cell_measurement_temperature    296(2)
_cell_volume                     1551.79(13)
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      296(2)
_diffrn_measured_fraction_theta_full 0.900
_diffrn_measured_fraction_theta_max 0.900
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_probe          x-ray
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0368
_diffrn_reflns_av_sigmaI/netI    0.0653
_diffrn_reflns_limit_h_max       13
_diffrn_reflns_limit_h_min       -13
_diffrn_reflns_limit_k_max       11
_diffrn_reflns_limit_k_min       -8
_diffrn_reflns_limit_l_max       22
_diffrn_reflns_limit_l_min       -16
_diffrn_reflns_number            15036
_diffrn_reflns_theta_full        28.23
_diffrn_reflns_theta_max         28.23
_diffrn_reflns_theta_min         1.98
_diffrn_source                   'fine-focus sealed tube'
_exptl_absorpt_coefficient_mu    0.081
_exptl_crystal_density_diffrn    1.294
_exptl_crystal_density_method    'not measured'
_exptl_crystal_F_000             640
_exptl_crystal_recrystallization_method ethylacetate
_refine_diff_density_max         0.133
_refine_diff_density_min         -0.174
_refine_diff_density_rms         0.039
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.975
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     208
_refine_ls_number_reflns         3446
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      0.975
_refine_ls_R_factor_all          0.1305
_refine_ls_R_factor_gt           0.0529
_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^)+(0.0575P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1046
_refine_ls_wR_factor_ref         0.1285
_reflns_number_gt                1693
_reflns_number_total             3446
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c3cc46191b.txt
_cod_data_source_block           mono
_cod_original_sg_symbol_H-M      'P 21/c'
_cod_database_code               7110186