The acyl nitroso Diels–Alder (ANDA) reaction of sorbate derivatives: an X-ray and 15N NMR study with an application to amino-acid synthesis
Bollans, Lee; Bacsa, John; Iggo, Jonathan A.; Morris, Gareth A.; Stachulski, Andrew V.; Organic & Biomolecular Chemistry 7 (2009) 4531–4538; doi:10.1039/b912963d

data_7150760
_publ_section_title
;
 The acyl nitroso Diels--Alder (ANDA) reaction of sorbate derivatives:
 an X-ray and 15N NMR study with an application to amino-acid synthesis
;
_journal_issue                   21
_journal_name_full               'Organic &amp; Biomolecular Chemistry'
_journal_page_first              4531
_journal_page_last               4538
_journal_paper_doi               10.1039/b912963d
_journal_volume                  7
_journal_year                    2009
_chemical_formula_moiety         'C18 H22 N2 O7'
_chemical_formula_sum            'C18 H22 N2 O7'
_chemical_formula_weight         378.38
_chemical_name_common
;
tert-butyl 3-methyl-6-((((4-nitrophenyl)carbonyl)oxy)methyl)-
1,2-oxazinane-2-carboxylate
;
_chemical_name_systematic
;
tert-butyl
3-methyl-6-
({[(4-nitrophenyl)carbonyl]oxy}methyl)-1,2-oxazinane-
2-carboxylate
;
_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                74.694(4)
_cell_angle_beta                 88.672(4)
_cell_angle_gamma                85.198(4)
_cell_formula_units_Z            2
_cell_length_a                   5.8725(14)
_cell_length_b                   10.826(3)
_cell_length_c                   14.459(3)
_cell_measurement_reflns_used    1072
_cell_measurement_temperature    100(2)
_cell_measurement_theta_max      26.09
_cell_measurement_theta_min      2.73
_cell_volume                     883.5(4)
_computing_cell_refinement       'SAINT v6.45a (Bruker, 2005)'
_computing_data_collection       'SMART v.5.632 (Bruker, 2005)'
_computing_data_reduction        'SAINT v6.45a (Bruker, 2005)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      100(2)
_diffrn_measured_fraction_theta_full 0.951
_diffrn_measured_fraction_theta_max 0.951
_diffrn_measurement_device_type  'Bruker D8 diffractometer with APEX detector'
_diffrn_measurement_method       '\w scans with a narrow frame width'
_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  0.0156
_diffrn_reflns_av_sigmaI/netI    0.0307
_diffrn_reflns_limit_h_max       7
_diffrn_reflns_limit_h_min       -6
_diffrn_reflns_limit_k_max       11
_diffrn_reflns_limit_k_min       -14
_diffrn_reflns_limit_l_max       18
_diffrn_reflns_limit_l_min       -19
_diffrn_reflns_number            5215
_diffrn_reflns_theta_full        27.10
_diffrn_reflns_theta_max         27.10
_diffrn_reflns_theta_min         1.46
_exptl_absorpt_coefficient_mu    0.110
_exptl_absorpt_correction_T_max  0.9836
_exptl_absorpt_correction_T_min  0.9469
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'SADABS V2008-1 (Bruker, 2008)'
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.422
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       plate
_exptl_crystal_F_000             400
_exptl_crystal_size_max          0.50
_exptl_crystal_size_mid          0.40
_exptl_crystal_size_min          0.15
_refine_diff_density_max         0.325
_refine_diff_density_min         -0.201
_refine_diff_density_rms         0.049
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.096
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     248
_refine_ls_number_reflns         3709
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.096
_refine_ls_R_factor_all          0.0450
_refine_ls_R_factor_gt           0.0386
_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^)+(0.0590P)^2^+0.1229P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1029
_refine_ls_wR_factor_ref         0.1056
_reflns_number_gt                3168
_reflns_number_total             3709
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            b912963d.txt
_cod_data_source_block           stac205m
_cod_original_sg_symbol_H-M      P-1
_cod_database_code               7150760