Trifluoroacetic acid-promoted Michael addition-cyclization reactions of vinylogous carbamates.
Naganaboina, Ram Tilak; Nayak, Amrita; Peddinti, Rama Krishna; Organic & biomolecular chemistry 12 (2014) 3366–3370; doi:10.1039/c4ob00437j

data_7153771
_publ_section_title
;
 Trifluoroacetic acid-promoted Michael addition-cyclization reactions of
 vinylogous carbamates.
;
_journal_issue                   21
_journal_name_full               'Organic &amp; biomolecular chemistry'
_journal_page_first              3366
_journal_page_last               3370
_journal_paper_doi               10.1039/c4ob00437j
_journal_volume                  12
_journal_year                    2014
_chemical_formula_sum            'C20 H15 N O4'
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_symmetry_space_group_name_Hall  '-P 1'
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_audit_creation_method           SHELXL-2013
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_diffrn_ambient_temperature      296(2)
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 1.000
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0384
_diffrn_reflns_av_unetI/netI     0.0172
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_diffrn_reflns_theta_max         26.372
_diffrn_reflns_theta_min         2.151
_exptl_absorpt_coefficient_mu    0.096
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_refine_ls_extinction_method     none
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_refine_ls_number_reflns         3226
_refine_ls_number_restraints     69
_refine_ls_restrained_S_all      1.238
_refine_ls_R_factor_all          0.0551
_refine_ls_R_factor_gt           0.0437
_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^)+(0.1000P)^2^]
 where P=(Fo^2^+2Fc^2^)/3
;
_refine_ls_weighting_scheme      calc
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_reflns_threshold_expression     'I > 2\s(I)'
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_cod_depositor_comments
'Adding full bibliography for 7153771--7153773.cif.'
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