Organocatalytic Access to Enantioenriched Dihydropyran Phosphonates via an Inverse-Electron-Demand Hetero-Diels-Alder Reaction.
Weise, Christian F; Lauridsen, Vibeke H; Rambo, Raoní S; Iversen, Eva H; Olsen, Marie-Luise; Jørgensen, Karl Anker; The Journal of organic chemistry 79 (2014) 3537–3546; doi:10.1021/jo500347a

data_4029274
_publ_section_title
;
 Organocatalytic Access to Enantioenriched Dihydropyran Phosphonates via
 an Inverse-Electron-Demand Hetero-Diels-Alder Reaction.
;
_journal_issue                   8
_journal_name_full               'The Journal of organic chemistry'
_journal_page_first              3537
_journal_page_last               3546
_journal_paper_doi               10.1021/jo500347a
_journal_volume                  79
_journal_year                    2014
_chemical_absolute_configuration ad
_chemical_formula_moiety         'C21 H25 O5 P'
_chemical_formula_sum            'C21 H25 O5 P'
_chemical_formula_weight         388.38
_space_group_crystal_system      monoclinic
_space_group_IT_number           4
_space_group_name_Hall           'P 2yb'
_space_group_name_H-M_alt        'P 1 21 1'
_symmetry_space_group_name_Hall  'P 2yb'
_symmetry_space_group_name_H-M   'P 1 21 1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_date             2013-12-17
_audit_creation_method
;
  Olex2 1.2
  (compiled Apr  9 2013 14:10:59, GUI svn.r4456)
;
_cell_angle_alpha                90.00
_cell_angle_beta                 99.425(3)
_cell_angle_gamma                90.00
_cell_formula_units_Z            2
_cell_length_a                   9.4518(6)
_cell_length_b                   9.6464(6)
_cell_length_c                   10.9137(7)
_cell_measurement_reflns_used    9916
_cell_measurement_temperature    100(2)
_cell_measurement_theta_max      27.01
_cell_measurement_theta_min      2.24
_cell_volume                     981.63(11)
_computing_molecular_graphics
;
O. V. Dolomanov, L. J. Bourhis, R. J. Gildea, J. A. K. Howard and H. Puschmann,
OLEX2: a complete structure solution, refinement and analysis program.
J. Appl. Cryst. (2009). 42, 339-341.
;
_computing_publication_material
;
O. V. Dolomanov, L. J. Bourhis, R. J. Gildea, J. A. K. Howard and H. Puschmann,
OLEX2: a complete structure solution, refinement and analysis program.
J. Appl. Cryst. (2009). 42, 339-341.
;
_computing_structure_refinement
;
SHELXL, G.M. Sheldrick, Acta Cryst.
(2008). A64, 112-122
;
_computing_structure_solution
;
SHELXS, G.M. Sheldrick, Acta Cryst.
(2008). A64, 112-122
;
_diffrn_ambient_temperature      100
_diffrn_detector                 'Bruker APEX2 area detector'
_diffrn_detector_area_resol_mean 7.9
_diffrn_detector_type            'CCD area detector'
_diffrn_measured_fraction_theta_full 0.988
_diffrn_measured_fraction_theta_max 0.988
_diffrn_measurement_device       'three-circle diffractometer'
_diffrn_measurement_device_type  'Bruker SMART APEX2 area detector'
_diffrn_measurement_method       '\w and \f scans'
_diffrn_radiation_monochromator  'mirror optics'
_diffrn_radiation_probe          x-ray
_diffrn_radiation_type           'Ag K\a'
_diffrn_radiation_wavelength     0.56085
_diffrn_reflns_av_R_equivalents  0.0462
_diffrn_reflns_av_unetI/netI     0.0461
_diffrn_reflns_limit_h_max       15
_diffrn_reflns_limit_h_min       -15
_diffrn_reflns_limit_k_max       15
_diffrn_reflns_limit_k_min       -15
_diffrn_reflns_limit_l_max       17
_diffrn_reflns_limit_l_min       -17
_diffrn_reflns_number            32834
_diffrn_reflns_theta_full        27.17
_diffrn_reflns_theta_max         27.17
_diffrn_reflns_theta_min         1.49
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.096
_exptl_absorpt_correction_T_max  0.7455
_exptl_absorpt_correction_T_min  0.6312
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
SADABS-2012/1 (Bruker,2012) was used for absorption correction.
wR2(int) was 0.1369 before and 0.0548 after correction.
The Ratio of minimum to maximum transmission is 0.8467.
The \l/2 correction factor is 0.0015.
;
_exptl_crystal_colour            'clear light yellow'
_exptl_crystal_colour_lustre     clear
_exptl_crystal_colour_modifier   light
_exptl_crystal_colour_primary    yellow
_exptl_crystal_density_diffrn    1.314
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       needle
_exptl_crystal_F_000             412
_exptl_crystal_size_max          0.2
_exptl_crystal_size_mid          0.14
_exptl_crystal_size_min          0.06
_refine_diff_density_max         0.523
_refine_diff_density_min         -0.381
_refine_diff_density_rms         0.064
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   0.06(9)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.049
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     247
_refine_ls_number_reflns         8741
_refine_ls_number_restraints     1
_refine_ls_restrained_S_all      1.049
_refine_ls_R_factor_all          0.0485
_refine_ls_R_factor_gt           0.0409
_refine_ls_shift/su_max          0.037
_refine_ls_shift/su_mean         0.001
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0457P)^2^+0.1952P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0947
_refine_ls_wR_factor_ref         0.1000
_reflns_number_gt                7818
_reflns_number_total             8741
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            jo500347a_si_003.cif
_cod_data_source_block           c21h25o5p_0m
_cod_depositor_comments
;Adding full bibliography for
 ./tmp-cod-update-bibliographies-12971/cifs/4029274.cif.
;
_cod_database_code               4029274
_olex2_refinement_description
;
1. Fixed Uiso
 At 1.2 times of:
  All C(H) groups, All C(H,H) groups
 At 1.5 times of:
  All C(H,H,H) groups, All O(H) groups
2.a Ternary CH refined with riding coordinates:
 C3(H3), C5(H5), C4(H4)
2.b Secondary CH2 refined with riding coordinates:
 C1(H1A,H1B), C2(H2A,H2B)
2.c Aromatic/amide H refined with riding coordinates:
 C6(H6), C19(H19), C15(H15), C16(H16), C18(H18), C9(H9), C17(H17), C13(H13),
 C11(H11), C10(H10), C12(H12)
2.d Idealised Me refined as rotating group:
 C20(H20A,H20B,H20C), C21(H21A,H21B,H21C)
2.e Idealised tetrahedral OH refined as rotating group:
 O5(H5A)
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