?-Hydroxycyclopentanones via one-pot oxidation of the trimethylaluminum-mediated Nazarov reaction with triplet oxygen
Yonghoon Kwon; Owen Scadeng; Robert McDonald; F. G. West; Chem.Commun. 50 (2014) 5558–; doi:10.1039/C4CC02330G

data_7113329
_publ_section_title
;
 ?-Hydroxycyclopentanones via one-pot oxidation of the
 trimethylaluminum-mediated Nazarov reaction with triplet oxygen
;
_journal_name_full               Chem.Commun.
_journal_page_first              5558
_journal_paper_doi               10.1039/C4CC02330G
_journal_volume                  50
_journal_year                    2014
_chemical_formula_moiety         'C14 H26 O2'
_chemical_formula_sum            'C14 H26 O2'
_chemical_formula_weight         226.35
_chemical_name_systematic
2-hydroxy-2,5,5-trimethyl-3,4-diisopropylcyclopentanone
_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                93.911(4)
_cell_angle_beta                 96.054(5)
_cell_angle_gamma                109.796(4)
_cell_formula_units_Z            2
_cell_length_a                   6.191(2)
_cell_length_b                   8.211(3)
_cell_length_c                   14.477(5)
_cell_measurement_reflns_used    2370
_cell_measurement_temperature    173(2)
_cell_measurement_theta_max      26.44
_cell_measurement_theta_min      2.65
_cell_volume                     684.3(4)
_computing_cell_refinement       'Bruker SAINT'
_computing_data_collection       'Bruker APEX2'
_computing_data_reduction        'Bruker SAINT'
_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'Bruker SHELXTL'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 2008)'
_computing_structure_solution    'SHELXD (Schneider & Sheldrick, 2002)'
_diffrn_ambient_temperature      173(2)
_diffrn_measured_fraction_theta_full 0.993
_diffrn_measured_fraction_theta_max 0.993
_diffrn_measurement_device_type  'Bruker APEX-II CCD'
_diffrn_measurement_method       '\w 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  0.0199
_diffrn_reflns_av_unetI/netI     0.0289
_diffrn_reflns_limit_h_max       7
_diffrn_reflns_limit_h_min       -7
_diffrn_reflns_limit_k_max       10
_diffrn_reflns_limit_k_min       -10
_diffrn_reflns_limit_l_max       18
_diffrn_reflns_limit_l_min       -18
_diffrn_reflns_number            5470
_diffrn_reflns_theta_full        26.50
_diffrn_reflns_theta_max         26.50
_diffrn_reflns_theta_min         2.65
_exptl_absorpt_coefficient_mu    0.071
_exptl_absorpt_correction_T_max  1.0000
_exptl_absorpt_correction_T_min  0.9006
_exptl_absorpt_correction_type   integration
_exptl_absorpt_process_details   'SADABS (Sheldrick, 2008)'
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.098
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       fragment
_exptl_crystal_F_000             252
_exptl_crystal_size_max          0.47
_exptl_crystal_size_mid          0.21
_exptl_crystal_size_min          0.19
_refine_diff_density_max         0.255
_refine_diff_density_min         -0.198
_refine_diff_density_rms         0.041
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.088
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     149
_refine_ls_number_reflns         2819
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.088
_refine_ls_R_factor_all          0.0592
_refine_ls_R_factor_gt           0.0472
_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^)+(0.0578P)^2^+0.2189P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1218
_refine_ls_wR_factor_ref         0.1310
_reflns_number_gt                2247
_reflns_number_total             2819
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            c4cc02330g2.cif
_cod_data_source_block           4e
_cod_database_code               7113329