Construction of Unique Eight- or Nine-Membered Polyheterocyclic Systems via Multicomponent Reaction of l-Proline, Alkyl Propiolate, and Isatin.
Cao, Jun; Yang, Fan; Sun, Jing; Huang, Ying; Yan, Chao-Guo; The Journal of organic chemistry 84 (2019) 622–635; doi:10.1021/acs.joc.8b02457

data_4035986
_publ_section_title
;
 Construction of Unique Eight- or Nine-Membered Polyheterocyclic Systems
 via Multicomponent Reaction of l-Proline, Alkyl Propiolate, and Isatin.
;
_journal_issue                   2
_journal_name_full               'The Journal of organic chemistry'
_journal_page_first              622
_journal_page_last               635
_journal_paper_doi               10.1021/acs.joc.8b02457
_journal_volume                  84
_journal_year                    2019
_chemical_formula_moiety         'C21 H21 Cl N2 O5'
_chemical_formula_sum            'C21 H21 Cl N2 O5'
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_audit_creation_method           SHELXL-2014/7
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_diffrn_ambient_temperature      296(2)
_diffrn_measured_fraction_theta_full 0.996
_diffrn_measured_fraction_theta_max 0.989
_diffrn_measurement_device_type  'CCD area detector'
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_diffrn_reflns_Laue_measured_fraction_full 0.996
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_diffrn_reflns_theta_max         27.593
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_exptl_absorpt_coefficient_mu    0.228
_exptl_absorpt_correction_T_max  0.955
_exptl_absorpt_correction_T_min  0.942
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   sadabs
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_refine_ls_extinction_method     none
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_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
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_refine_ls_number_reflns         4582
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.016
_refine_ls_R_factor_all          0.0897
_refine_ls_R_factor_gt           0.0520
_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^)+(0.0569P)^2^+0.3741P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
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_reflns_number_total             4582
_reflns_threshold_expression     'I > 2\s(I)'
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_shelx_shelxl_version_number     2014/7
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_shelx_estimated_absorpt_t_max   0.956
_shelx_res_checksum              74129
_shelx_hkl_checksum              82608