Reactivity of Allenylphosphonates toward Salicylaldehydes and Activated Phenols: Facile Synthesis of Chromenes and Substituted Butadienes
N. N. Bhuvan Kumar; M. Nagarjuna Reddy; K. C. Kumara Swamy; Journal of Organic Chemistry 74 (2009) 5395–5404; doi:10.1021/jo900896v

data_4024702
_publ_section_title
;
Reactivity of Allenylphosphonates toward Salicylaldehydes and Activated
Phenols: Facile Synthesis of Chromenes and Substituted Butadienes
;
_journal_name_full               'Journal of Organic Chemistry'
_journal_page_first              5395
_journal_page_last               5404
_journal_paper_doi               10.1021/jo900896v
_journal_volume                  74
_journal_year                    2009
_chemical_formula_sum            'C16 H21 O5 P'
_chemical_formula_weight         324.30
_space_group_IT_number           15
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-C 2yc'
_symmetry_space_group_name_H-M   'C 1 2/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                 109.73(3)
_cell_angle_gamma                90.00
_cell_formula_units_Z            8
_cell_length_a                   30.604(6)
_cell_length_b                   9.5310(19)
_cell_length_c                   11.840(2)
_cell_measurement_reflns_used    9306
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      25.95
_cell_measurement_theta_min      2.25
_cell_volume                     3251.0(11)
_computing_cell_refinement       'Bruker SMART'
_computing_data_collection       'Bruker SMART'
_computing_data_reduction        'Bruker SAINT'
_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'Bruker SHELXTL'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      293(2)
_diffrn_measured_fraction_theta_full 1.000
_diffrn_measured_fraction_theta_max 1.000
_diffrn_measurement_device_type  'CCD area detector'
_diffrn_measurement_method       'phi and omega 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  0.0247
_diffrn_reflns_av_sigmaI/netI    0.0172
_diffrn_reflns_limit_h_max       36
_diffrn_reflns_limit_h_min       -36
_diffrn_reflns_limit_k_max       11
_diffrn_reflns_limit_k_min       -11
_diffrn_reflns_limit_l_max       14
_diffrn_reflns_limit_l_min       -14
_diffrn_reflns_number            15029
_diffrn_reflns_theta_full        25.00
_diffrn_reflns_theta_max         25.00
_diffrn_reflns_theta_min         2.25
_diffrn_standards_decay_%        0
_diffrn_standards_interval_count 'not applicable'
_diffrn_standards_interval_time  'not applicable'
_diffrn_standards_number         'not applicable'
_exptl_absorpt_coefficient_mu    0.189
_exptl_absorpt_correction_T_max  0.9595
_exptl_absorpt_correction_T_min  0.9401
_exptl_absorpt_correction_type   empirical
_exptl_absorpt_process_details   'SADABS, Sheldrick (1996)'
_exptl_crystal_colour            Colourless
_exptl_crystal_density_diffrn    1.325
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       blocks
_exptl_crystal_F_000             1376
_exptl_crystal_size_max          0.33
_exptl_crystal_size_mid          0.31
_exptl_crystal_size_min          0.22
_refine_diff_density_max         0.845
_refine_diff_density_min         -0.303
_refine_diff_density_rms         0.052
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.036
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     203
_refine_ls_number_reflns         2858
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.036
_refine_ls_R_factor_all          0.0541
_refine_ls_R_factor_gt           0.0490
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0823P)^2^+3.6187P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1393
_refine_ls_wR_factor_ref         0.1433
_reflns_number_gt                2500
_reflns_number_total             2858
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            jo900896v_si_002_03.cif
_cod_data_source_block           compd(E)-19
_cod_depositor_comments
;
The following automatic conversions were performed:
'_symmetry_cell_setting' value 'Monoclinic' changed to 'monoclinic'
according to '/home/saulius/struct/CIF-dictionaries/cif_core.dic'
dictionary named 'cif_core.dic' version 2.4.1 from 2010-06-29.

Automatic conversion script
Id: cif_fix_enum 1527 2010-12-29 10:47:43Z saulius 
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_cod_original_sg_symbol_H-M      C2/c
_cod_database_code               4024702