Domino Reaction of Pyrrolidinium Ylides: Michael Addition/[1,2]-Stevens Rearrangement.
Kowalkowska, Anna; Jończyk, Andrzej; Maurin, Jan K.; The Journal of organic chemistry 83 (2018) 4105–4110; doi:10.1021/acs.joc.7b03278

data_4035506
_publ_section_title
;
 Domino Reaction of Pyrrolidinium Ylides: Michael Addition/[1,2]-Stevens
 Rearrangement.
;
_journal_issue                   7
_journal_name_full               'The Journal of organic chemistry'
_journal_page_first              4105
_journal_page_last               4110
_journal_paper_doi               10.1021/acs.joc.7b03278
_journal_volume                  83
_journal_year                    2018
_chemical_formula_moiety         'C20 H28 N2 O2'
_chemical_formula_sum            'C20 H28 N2 O2'
_chemical_formula_weight         328.44
_chemical_melting_point          364
_chemical_name_systematic
; 
2-(2-tert-butoxycarbonylethyl)-2-cyano-1-methyl-3-phenylpiperidine 
;
_space_group_IT_number           2
_space_group_name_Hall           '-P 1'
_space_group_name_H-M_alt        'P -1'
_symmetry_cell_setting           triclinic
_symmetry_space_group_name_Hall  '-P 1'
_symmetry_space_group_name_H-M   'P -1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_audit_update_record
;
2018-02-06 # Formatted by publCIF
;
_cell_angle_alpha                95.609(2)
_cell_angle_beta                 97.192(2)
_cell_angle_gamma                108.834(2)
_cell_formula_units_Z            2
_cell_length_a                   7.8725(2)
_cell_length_b                   10.5460(3)
_cell_length_c                   12.3593(2)
_cell_measurement_reflns_used    22761
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      71.1990
_cell_measurement_theta_min      3.6310
_cell_volume                     953.04(4)
_computing_cell_refinement       'CrysAlisPro 1.171.39.25a (Rigaku OD, 2015)'
_computing_data_collection       'CrysAlisPro 1.171.39.25a (Rigaku OD, 2015)'
_computing_data_reduction        'CrysAlisPro 1.171.39.25a (Rigaku OD, 2015)'
_computing_molecular_graphics    'XP (Bruker AXS, 2001)'
_computing_publication_material  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      293(2)
_diffrn_detector                 'CCD plate'
_diffrn_detector_area_resol_mean 10.4922
_diffrn_detector_type            Ruby
_diffrn_measured_fraction_theta_full 0.995
_diffrn_measured_fraction_theta_max 0.995
_diffrn_measurement_device       'four-circle diffractometer'
_diffrn_measurement_device_type  'Xcalibur, Ruby'
_diffrn_measurement_method       '\w scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_probe          x-ray
_diffrn_radiation_type           'Cu K\a'
_diffrn_radiation_wavelength     1.54184
_diffrn_reflns_av_R_equivalents  0.0269
_diffrn_reflns_av_sigmaI/netI    0.0099
_diffrn_reflns_limit_h_max       9
_diffrn_reflns_limit_h_min       -9
_diffrn_reflns_limit_k_max       12
_diffrn_reflns_limit_k_min       -12
_diffrn_reflns_limit_l_max       15
_diffrn_reflns_limit_l_min       -15
_diffrn_reflns_number            39962
_diffrn_reflns_theta_full        71.23
_diffrn_reflns_theta_max         71.23
_diffrn_reflns_theta_min         3.64
_diffrn_source                   'fine-focus sealed X-ray tube'
_diffrn_source_type              'Enhance (Cu) X-ray Source'
_exptl_absorpt_coefficient_mu    0.581
_exptl_absorpt_correction_T_max  0.919
_exptl_absorpt_correction_T_min  0.843
_exptl_absorpt_correction_type   analytical
_exptl_absorpt_process_details
;
CrysAlisPro 1.171.39.25a (Rigaku Oxford Diffraction, 2015)
Analytical numeric absorption correction using a multifaceted crystal
			model based on expressions derived by R.C. Clark & J.S. Reid.
(Clark, R. C. & Reid, J. S. (1995). Acta Cryst. A51, 887-897)
Empirical absorption correction using spherical harmonics,
 implemented in SCALE3 ABSPACK scaling algorithm.
;
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.145
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       'paralellepiped, cut from longer'
_exptl_crystal_F_000             356
_exptl_crystal_size_max          0.446
_exptl_crystal_size_mid          0.228
_exptl_crystal_size_min          0.165
_refine_diff_density_max         0.462
_refine_diff_density_min         -0.357
_refine_diff_density_rms         0.049
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.081
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     224
_refine_ls_number_reflns         3675
_refine_ls_number_restraints     24
_refine_ls_restrained_S_all      1.078
_refine_ls_R_factor_all          0.0759
_refine_ls_R_factor_gt           0.0713
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.1334P)^2^+0.2493P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.2206
_refine_ls_wR_factor_ref         0.2277
_reflns_number_gt                3289
_reflns_number_total             3675
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            jo7b03278_si_003.cif
_cod_data_source_block           pw15abs
_cod_database_code               4035506