Fluoride-assisted activation of calcium carbide: a simple method for the ethynylation of aldehydes and ketones.
Hosseini, Abolfazl; Seidel, Daniel; Miska, Andreas; Schreiner, Peter R.; Organic letters 17 (2015) 2808–2811; doi:10.1021/acs.orglett.5b01219

data_1519923
_publ_section_title
;
 Fluoride-assisted activation of calcium carbide: a simple method for the
 ethynylation of aldehydes and ketones.
;
_journal_issue                   11
_journal_name_full               'Organic letters'
_journal_page_first              2808
_journal_page_last               2811
_journal_paper_doi               10.1021/acs.orglett.5b01219
_journal_volume                  17
_journal_year                    2015
_chemical_absolute_configuration ad
_chemical_formula_sum            'C21 H34 O3'
_chemical_formula_weight         334.48
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_space_group_name_Hall           'P 2yb'
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_symmetry_space_group_name_Hall  'P 2yb'
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_atom_sites_solution_hydrogens   mixed
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_diffrn_measurement_device_type  'BRUKER D8 Venture'
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_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   SADABS-2014/4
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_exptl_crystal_description       block
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_refine_ls_abs_structure_details
;
 Refined as an inversion twin.
;
_refine_ls_abs_structure_Flack   0.0(2)
_refine_ls_extinction_method     none
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_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0477P)^2^+0.1144P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0746
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_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            ol5b01219_si_002.cif
_cod_data_source_block           cu_schr15017_0ma_a
_cod_depositor_comments          'Adding full bibliography for 1519923.cif.'
_cod_database_code               1519923
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_shelxl_version_number           2014/6
_shelx_res_checksum              26360
_shelx_hkl_checksum              51277