Direct Bis-Arylation of Cyclobutanecarboxamide via Double C-H Activation: An Auxiliary-Aided Diastereoselective Pd-Catalyzed Access to Trisubstituted Cyclobutane Scaffolds Having Three Contiguous Stereocenters and an All-cis Stereochemistry
Ramarao Parella; Bojan Gopalakrishnan; Srinivasarao Arulananda Babu; Journal of Organic Chemistry 78 (2013) 11911–11934; doi:10.1021/jo4019733

data_4028808
_publ_contact_author_address
;
Department of Chemical Sciences
Indian Institute of Science Education and Research, Mohali, Sector 81,
S. A. S. Nagar, Manauli PO, Punjab, INDIA. 140306.
;
_publ_contact_author_email       sababu@iisermohali.ac.in
_publ_contact_author_fax         '0091 (172) 2240266'
_publ_contact_author_name        'Babu, S. A.'
_publ_contact_author_phone       '0091 (172) 2240124'
_publ_section_title
;
 Direct Bis-Arylation of Cyclobutanecarboxamide via Double C-H Activation:
 An Auxiliary-Aided Diastereoselective Pd-Catalyzed Access to
 Trisubstituted Cyclobutane Scaffolds Having Three Contiguous
 Stereocenters and an All-cis Stereochemistry
;
_journal_name_full               'Journal of Organic Chemistry'
_journal_page_first              11911
_journal_page_last               11934
_journal_paper_doi               10.1021/jo4019733
_journal_volume                  78
_journal_year                    2013
_chemical_formula_sum            'C21 H24 N4 O5'
_chemical_formula_weight         412.44
_space_group_crystal_system      monoclinic
_space_group_IT_number           15
_space_group_name_Hall           '-C 2yc'
_space_group_name_H-M_alt        'C 1 2/c 1'
_symmetry_space_group_name_Hall  '-C 2yc'
_symmetry_space_group_name_H-M   'C 1 2/c 1'
_atom_sites_solution_hydrogens   geom
_audit_conform_dict_location     ftp://ftp.iucr.org/pub/cif_core.dic
_audit_conform_dict_name         cif_core.dic
_audit_conform_dict_version      2.4
_audit_creation_date             2013-09-05T14:28:51-00:00
_audit_creation_method           'WinGX routine CIF_UPDATE'
_cell_angle_alpha                90
_cell_angle_beta                 92.293(4)
_cell_angle_gamma                90
_cell_formula_units_Z            8
_cell_length_a                   35.3642(14)
_cell_length_b                   5.4364(2)
_cell_length_c                   21.9052(9)
_cell_measurement_temperature    296(2)
_cell_volume                     4208.0(3)
_computing_structure_refinement  'SHELXL-2013 (Sheldrick, 2013)'
_diffrn_ambient_temperature      296(2)
_diffrn_measured_fraction_theta_full 1
_diffrn_measured_fraction_theta_max 1
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0511
_diffrn_reflns_Laue_measured_fraction_full 1
_diffrn_reflns_Laue_measured_fraction_max 1
_diffrn_reflns_limit_h_max       41
_diffrn_reflns_limit_h_min       -42
_diffrn_reflns_limit_k_max       6
_diffrn_reflns_limit_k_min       -6
_diffrn_reflns_limit_l_max       26
_diffrn_reflns_limit_l_min       -24
_diffrn_reflns_number            24400
_diffrn_reflns_point_group_measured_fraction_full 1
_diffrn_reflns_point_group_measured_fraction_max 1
_diffrn_reflns_theta_full        25
_diffrn_reflns_theta_max         25.027
_diffrn_reflns_theta_min         1.152
_exptl_absorpt_coefficient_mu    0.095
_exptl_absorpt_correction_type   none
_exptl_crystal_density_diffrn    1.302
_exptl_crystal_F_000             1744
_exptl_crystal_size_max          0.2
_exptl_crystal_size_mid          0.1
_exptl_crystal_size_min          0.1
_refine_diff_density_max         0.145
_refine_diff_density_min         -0.159
_refine_diff_density_rms         0.036
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.007
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     273
_refine_ls_number_reflns         3728
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.007
_refine_ls_R_factor_all          0.1166
_refine_ls_R_factor_gt           0.0513
_refine_ls_shift/su_max          0
_refine_ls_shift/su_mean         0
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0769P)^2^+0.8117P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1308
_refine_ls_wR_factor_ref         0.1615
_reflns_number_gt                1925
_reflns_number_total             3728
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            jo4019733_si_005.cif
_cod_data_source_block           123
_cod_database_code               4028808