Application of Reactive Enols in Synthesis: A Versatile, Efficient, and Stereoselective Construction of the Welwitindolinone Carbon Skeleton
John L. Wood; Alexandra A. Holubec; Brian M. Stoltz; Matthew M. Weiss; Julie A. Dixon; Brian D. Doan; Mohammed F. Shamji; Jennifer M. Chen; Timothy P. Heffron; Journal of the American Chemical Society 121 (1999) 6326–6327; doi:10.1021/ja991022s

data_4116435
_publ_contact_author
;
John L. Wood
Yale University
Department of Chemistry
P.O. Box 208107
New Haven, CT  06520-8107
;
_publ_contact_author_email       ' john.wood@quickmail.yale.edu'
_publ_contact_author_fax         ' (203)432-6144 '
_publ_contact_author_phone       ' (203)432-5991 '
_publ_section_title
;
 Application of Reactive Enols in Synthesis: A Versatile, Efficient, and
 Stereoselective Construction of the Welwitindolinone Carbon Skeleton
;
_journal_name_full               'Journal of the American Chemical Society'
_journal_page_first              6326
_journal_page_last               6327
_journal_paper_doi               10.1021/ja991022s
_journal_volume                  121
_journal_year                    1999
_chemical_formula_moiety         'C20 H25 N O3 '
_chemical_formula_sum            'C20 H25 N O3'
_chemical_formula_weight         327.42
_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'
_audit_creation_date             'Wed Mar 17 13:50:36 1999'
_audit_creation_method           'from TEXRAY.INF file'
_cell_angle_alpha                90
_cell_angle_beta                 93.319(3)
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   13.610(1)
_cell_length_b                   8.1789(4)
_cell_length_c                   15.026(1)
_cell_measurement_reflns_used    0
_cell_measurement_temperature    183.2
_cell_measurement_theta_max      0.0
_cell_measurement_theta_min      0.0
_cell_volume                     1669.81(18)
_computing_cell_refinement       'MSC/AFC Diffractometer Control'
_computing_data_collection       'MSC/AFC Diffractometer Control'
_computing_data_reduction        teXsan
_computing_publication_material  teXsan
_computing_structure_refinement  teXsan
_diffrn_ambient_temperature      183.2
_diffrn_measurement_device       'Nonius KappaCCD'
_diffrn_measurement_method       'CCD data frame'
_diffrn_orient_matrix_UB_11      0.00000
_diffrn_orient_matrix_UB_12      0.00000
_diffrn_orient_matrix_UB_13      0.00000
_diffrn_orient_matrix_UB_21      0.00000
_diffrn_orient_matrix_UB_22      0.00000
_diffrn_orient_matrix_UB_23      0.00000
_diffrn_orient_matrix_UB_31      0.00000
_diffrn_orient_matrix_UB_32      0.00000
_diffrn_orient_matrix_UB_33      0.00000
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'X-ray tube'
_diffrn_radiation_type           MoKalpha
_diffrn_radiation_wavelength     0.7107
_diffrn_reflns_av_R_equivalents  0.00
_diffrn_reflns_limit_h_max       19
_diffrn_reflns_limit_h_min       0
_diffrn_reflns_limit_k_max       11
_diffrn_reflns_limit_k_min       0
_diffrn_reflns_limit_l_max       21
_diffrn_reflns_limit_l_min       -21
_diffrn_reflns_number            5403
_diffrn_reflns_theta_max         30.53
_diffrn_standards_decay_%        0.00
_diffrn_standards_interval_count 0
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.087
_exptl_absorpt_correction_type   none
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.302
_exptl_crystal_description       plate
_exptl_crystal_F_000             704.00
_exptl_crystal_size_max          0.210
_exptl_crystal_size_mid          0.120
_exptl_crystal_size_min          0.070
_refine_diff_density_max         0.49
_refine_diff_density_min         -0.38
_refine_ls_extinction_coef       6.61905
_refine_ls_extinction_method     Zachariasen_type_2_Gaussian_isotropic
_refine_ls_goodness_of_fit_obs   2.063
_refine_ls_hydrogen_treatment    noref
_refine_ls_matrix_type           full
_refine_ls_number_parameters     217
_refine_ls_number_reflns         1644
_refine_ls_number_restraints     0
_refine_ls_R_factor_obs          0.0664
_refine_ls_shift/esd_max         0.0001
_refine_ls_structure_factor_coef F
_refine_ls_weighting_scheme      sigma
_refine_ls_wR_factor_obs         0.0605
_reflns_number_observed          1644
_reflns_number_total             5403
_reflns_observed_criterion       3.00
_cod_data_source_file            ja991022s_3.cif
_cod_data_source_block           compound_29
_cod_original_cell_volume        1669.8(2)
_cod_original_sg_symbol_H-M      'P 21/c '
_cod_original_formula_sum        'C20 H25 N O3 '
_cod_database_code               4116435