Syntheses of Polycyclic Tetrahydrofurans by Cascade Reactions Consisting of Five-Membered Ring Selective Prins Cyclization and Friedel-Crafts Cyclization.
Sakata, Yuki; Yasui, Eiko; Takatori, Kazuhiko; Suzuki, Yuji; Mizukami, Megumi; Nagumo, Shinji; The Journal of organic chemistry 83 (2018) 9103–9118; doi:10.1021/acs.joc.8b01195

data_4035381
_publ_section_title
;
 Syntheses of Polycyclic Tetrahydrofurans by Cascade Reactions Consisting
 of Five-Membered Ring Selective Prins Cyclization and Friedel-Crafts
 Cyclization.
;
_journal_issue                   16
_journal_name_full               'The Journal of organic chemistry'
_journal_page_first              9103
_journal_page_last               9118
_journal_paper_doi               10.1021/acs.joc.8b01195
_journal_volume                  83
_journal_year                    2018
_chemical_formula_moiety         'C26 H23 N O3 S'
_chemical_formula_sum            'C26 H23 N O3 S'
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_space_group_name_Hall           '-P 2yn'
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_atom_sites_solution_secondary   difmap
_cell_angle_alpha                90.0000
_cell_angle_beta                 94.048(7)
_cell_angle_gamma                90.0000
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_cell_length_b                   10.37944(19)
_cell_length_c                   14.6537(3)
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_cell_measurement_theta_max      68.13
_cell_measurement_theta_min      3.02
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_computing_cell_refinement       'RAPID AUTO'
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_computing_structure_solution    'SHELXT Version 2014/4 (Sheldrick, 2014)'
_diffrn_ambient_temperature      93
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_diffrn_measured_fraction_theta_max 0.999
_diffrn_measurement_device_type  'Rigaku R-AXIS RAPID'
_diffrn_measurement_method       \w
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_diffrn_reflns_av_R_equivalents  0.0241
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_diffrn_reflns_point_group_measured_fraction_full 0.999
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_diffrn_reflns_theta_min         4.222
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_exptl_absorpt_coefficient_mu    1.584
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_exptl_absorpt_correction_T_min  0.666
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_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.343
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       prism
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_exptl_crystal_size_mid          0.180
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_refine_ls_number_reflns         3876
_refine_ls_number_restraints     0
_refine_ls_R_factor_all          0.0362
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_refine_ls_shift/su_max          0.001
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w = 1/[\s^2^(Fo^2^)+(0.0508P)^2^+1.1756P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0903
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