Synthesis of 3-Alkoxymethylcoumarin from 3-Cyanochromene via a Novel Intermediate 2-Phenylimino-3-alkoxymethylchromene
Jui-Chi Tsai; Sie-Rong Li; Michael Y. Chiang; Lian-Yeu Chen; Po-Yuan Chen; Yi-Fang Lo; Chen-Hao Wang; Chun-Nan Lin; Eng-Chi Wang; Journal of Organic Chemistry 74 (2009) 8798–8801; doi:10.1021/jo9015634

data_4025040
_publ_section_title
;
Synthesis of 3-Alkoxymethylcoumarin from 3-Cyanochromene via a Novel
Intermediate 2-Phenylimino-3-alkoxymethylchromene
;
_journal_name_full               'Journal of Organic Chemistry'
_journal_page_first              8798
_journal_page_last               8801
_journal_paper_doi               10.1021/jo9015634
_journal_volume                  74
_journal_year                    2009
_chemical_formula_moiety         'C19 H19 N O2'
_chemical_formula_sum            'C19 H19 N O2'
_chemical_formula_weight         293.35
_space_group_IT_number           11
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-P 2yb'
_symmetry_space_group_name_H-M   'P 1 21/m 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                 101.068(18)
_cell_angle_gamma                90.00
_cell_formula_units_Z            2
_cell_length_a                   9.856(2)
_cell_length_b                   7.3947(18)
_cell_length_c                   11.096(2)
_cell_measurement_reflns_used    25
_cell_measurement_temperature    298(2)
_cell_measurement_theta_max      12.17
_cell_measurement_theta_min      8.45
_cell_volume                     793.7(3)
_computing_cell_refinement
'MSC/AFC (Molecular Structure Corporation, 1992)'
_computing_data_collection
'MSC/AFC (Molecular Structure Corporation, 1992)'
_computing_data_reduction
'teXsan (Molecular Structure Corporation, 1985)'
_computing_molecular_graphics    'ORTEP-3 for Windows (Farrugia, 1997)'
_computing_publication_material  'WINGX publication routines (Farrugia, 1999)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SIR92 (Altomare et al., 1993)'
_diffrn_ambient_temperature      298(2)
_diffrn_measured_fraction_theta_full 1.000
_diffrn_measured_fraction_theta_max 1.000
_diffrn_measurement_device_type  'Rigaku AFC7S'
_diffrn_measurement_method       2\q/\w
_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  0.0130
_diffrn_reflns_av_sigmaI/netI    0.0142
_diffrn_reflns_limit_h_max       12
_diffrn_reflns_limit_h_min       -11
_diffrn_reflns_limit_k_max       0
_diffrn_reflns_limit_k_min       -9
_diffrn_reflns_limit_l_max       0
_diffrn_reflns_limit_l_min       -13
_diffrn_reflns_number            1769
_diffrn_reflns_theta_full        26.00
_diffrn_reflns_theta_max         26.00
_diffrn_reflns_theta_min         1.87
_diffrn_standards_decay_%        -0.34
_diffrn_standards_interval_count 150
_diffrn_standards_number         3
_exptl_absorpt_coefficient_mu    0.079
_exptl_absorpt_correction_T_max  1.00
_exptl_absorpt_correction_T_min  0.886
_exptl_absorpt_correction_type   psi-scan
_exptl_absorpt_process_details   'North et al., 1968'
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.227
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       plate
_exptl_crystal_F_000             312
_exptl_crystal_size_max          0.8
_exptl_crystal_size_mid          0.7
_exptl_crystal_size_min          0.5
_refine_diff_density_max         0.190
_refine_diff_density_min         -0.159
_refine_diff_density_rms         0.034
_refine_ls_extinction_coef       0.177(13)
_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^
_refine_ls_extinction_method     SHELXL
_refine_ls_goodness_of_fit_ref   1.069
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     144
_refine_ls_number_reflns         1685
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.069
_refine_ls_R_factor_all          0.0536
_refine_ls_R_factor_gt           0.0409
_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^)+(0.0660P)^2^+0.1743P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1224
_refine_ls_wR_factor_ref         0.1332
_reflns_number_gt                1332
_reflns_number_total             1685
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            jo9015634_si_001.cif
_cod_data_source_block           ecw1a
_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 
;
_cod_original_sg_symbol_H-M      'P 21/m'
_cod_database_code               4025040