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_4037518
_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            'C14 H16 N2 O4'
_chemical_formula_weight         276.29
_space_group_crystal_system      orthorhombic
_space_group_IT_number           61
_space_group_name_Hall           '-P 2ac 2ab'
_space_group_name_H-M_alt        'P b c a'
_atom_sites_solution_hydrogens   mixed
_audit_creation_method           SHELXL-2014
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_formula_units_Z            8
_cell_length_a                   9.5731(5)
_cell_length_b                   14.4963(9)
_cell_length_c                   18.9287(11)
_cell_measurement_reflns_used    4680
_cell_measurement_temperature    100(2)
_cell_measurement_theta_max      29.97
_cell_measurement_theta_min      2.77
_cell_volume                     2626.8(3)
_computing_structure_refinement  'SHELXL-2014 (Sheldrick, 2015)'
_diffrn_ambient_temperature      100(2)
_diffrn_measured_fraction_theta_full 0.994
_diffrn_measured_fraction_theta_max 0.996
_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  0.0683
_diffrn_reflns_av_unetI/netI     0.0361
_diffrn_reflns_Laue_measured_fraction_full 0.994
_diffrn_reflns_Laue_measured_fraction_max 0.996
_diffrn_reflns_limit_h_max       13
_diffrn_reflns_limit_h_min       -13
_diffrn_reflns_limit_k_max       20
_diffrn_reflns_limit_k_min       -20
_diffrn_reflns_limit_l_max       26
_diffrn_reflns_limit_l_min       -26
_diffrn_reflns_number            35587
_diffrn_reflns_point_group_measured_fraction_full 0.994
_diffrn_reflns_point_group_measured_fraction_max 0.996
_diffrn_reflns_theta_full        25.242
_diffrn_reflns_theta_max         29.999
_diffrn_reflns_theta_min         4.116
_exptl_absorpt_coefficient_mu    0.104
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.397
_exptl_crystal_description       fragment
_exptl_crystal_F_000             1168
_exptl_crystal_size_max          0.420
_exptl_crystal_size_mid          0.200
_exptl_crystal_size_min          0.120
_refine_diff_density_max         0.716
_refine_diff_density_min         -0.369
_refine_diff_density_rms         0.061
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.050
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     189
_refine_ls_number_reflns         3821
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.050
_refine_ls_R_factor_all          0.0681
_refine_ls_R_factor_gt           0.0467
_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^)+(0.0650P)^2^+1.2524P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1197
_refine_ls_wR_factor_ref         0.1330
_reflns_Friedel_coverage         0.000
_reflns_number_gt                2901
_reflns_number_total             3821
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            jo7b01348_si_002.cif
_cod_data_source_block           21a
_cod_database_code               4037518
_shelx_estimated_absorpt_t_min   0.958
_shelx_estimated_absorpt_t_max   0.988
_shelxl_version_number           2014-3
_shelx_res_checksum              65179
_shelx_hkl_checksum              96068