Nucleophile-Mediated Ring Expansion of 5-Acyl-substituted 4-Mesyloxymethyl-1,2,3,4-tetrahydropyrimidin-2-ones in the Synthesis of 7-Membered Analogues of Biginelli Compounds and Related Heterocycles.
Fesenko, Anastasia A.; Grigoriev, Mikhail S.; Shutalev, Anatoly D.; The Journal of organic chemistry 82 (2017) 8085–8110; doi:10.1021/acs.joc.7b01348

data_4037520
_publ_section_title
;
 Nucleophile-Mediated Ring Expansion of 5-Acyl-substituted
 4-Mesyloxymethyl-1,2,3,4-tetrahydropyrimidin-2-ones in the Synthesis of
 7-Membered Analogues of Biginelli Compounds and Related Heterocycles.
;
_journal_issue                   15
_journal_name_full               'The Journal of organic chemistry'
_journal_page_first              8085
_journal_page_last               8110
_journal_paper_doi               10.1021/acs.joc.7b01348
_journal_volume                  82
_journal_year                    2017
_chemical_formula_sum            'C13 H12 N2 O3'
_chemical_formula_weight         244.25
_space_group_crystal_system      monoclinic
_space_group_IT_number           14
_space_group_name_Hall           '-P 2yn'
_space_group_name_H-M_alt        'P 1 21/n 1'
_atom_sites_solution_hydrogens   geom
_audit_creation_method           SHELXL-2014
_cell_angle_alpha                90
_cell_angle_beta                 100.3160(10)
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   9.0834(2)
_cell_length_b                   9.2348(2)
_cell_length_c                   14.2670(3)
_cell_measurement_reflns_used    4791
_cell_measurement_temperature    100(2)
_cell_measurement_theta_max      30.12
_cell_measurement_theta_min      2.91
_cell_volume                     1177.42(4)
_computing_structure_refinement  'SHELXL-2014 (Sheldrick, 2015)'
_diffrn_ambient_temperature      100(2)
_diffrn_measured_fraction_theta_full 0.995
_diffrn_measured_fraction_theta_max 0.997
_diffrn_measurement_device_type
'Bruker KAPPA APEX II area-detector diffractometer'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0268
_diffrn_reflns_av_unetI/netI     0.0269
_diffrn_reflns_Laue_measured_fraction_full 0.995
_diffrn_reflns_Laue_measured_fraction_max 0.997
_diffrn_reflns_limit_h_max       12
_diffrn_reflns_limit_h_min       -12
_diffrn_reflns_limit_k_max       12
_diffrn_reflns_limit_k_min       -11
_diffrn_reflns_limit_l_max       20
_diffrn_reflns_limit_l_min       -16
_diffrn_reflns_number            14338
_diffrn_reflns_point_group_measured_fraction_full 0.995
_diffrn_reflns_point_group_measured_fraction_max 0.997
_diffrn_reflns_theta_full        25.242
_diffrn_reflns_theta_max         30.000
_diffrn_reflns_theta_min         4.414
_exptl_absorpt_coefficient_mu    0.100
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.378
_exptl_crystal_description       fragment
_exptl_crystal_F_000             512
_exptl_crystal_size_max          0.400
_exptl_crystal_size_mid          0.320
_exptl_crystal_size_min          0.200
_refine_diff_density_max         0.396
_refine_diff_density_min         -0.249
_refine_diff_density_rms         0.049
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.032
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     163
_refine_ls_number_reflns         3420
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.032
_refine_ls_R_factor_all          0.0500
_refine_ls_R_factor_gt           0.0390
_refine_ls_shift/su_max          0.000
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0497P)^2^+0.4004P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0964
_refine_ls_wR_factor_ref         0.1038
_reflns_Friedel_coverage         0.000
_reflns_number_gt                2819
_reflns_number_total             3420
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            jo7b01348_si_002.cif
_cod_data_source_block           33a
_cod_original_sg_symbol_H-M      'P 21/n'
_cod_database_code               4037520
_shelx_estimated_absorpt_t_min   0.961
_shelx_estimated_absorpt_t_max   0.980
_shelxl_version_number           2014-3
_shelx_res_checksum              30446
_shelx_hkl_checksum              96224