Lewis base catalyzed regioselective cyclization of allene ketones or α-methyl allene ketones with unsaturated pyrazolones.
Cheng, Cheng; Sun, Xiaobin; Wu, Zelin; Liu, Qianwei; Xiong, Liqiang; Miao, Zhiwei; Organic & biomolecular chemistry 17 (2019) 3232–3238; doi:10.1039/c9ob00179d

data_7156703
_publ_section_title
;
 Lewis base catalyzed regioselective cyclization of allene ketones or
 \a-methyl allene ketones with unsaturated pyrazolones.
;
_journal_issue                   12
_journal_name_full               'Organic &amp; biomolecular chemistry'
_journal_page_first              3232
_journal_page_last               3238
_journal_paper_doi               10.1039/c9ob00179d
_journal_volume                  17
_journal_year                    2019
_chemical_formula_sum            'C24 H28 N2 O2'
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;
2018-06-23 deposited with the CCDC.    2019-02-26 downloaded from the CCDC.
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_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0925P)^2^] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
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_cod_data_source_file            c9ob00179d2.cif
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_cod_depositor_comments
;
The following automatic conversions were performed:

'_exptl_absorpt_correction_type' value 'Multi-scan' changed to
'multi-scan' according to
/home/data/users/saulius/crontab/automatic-downloads/rss-feeds/RSC/lib/dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.2 from 2011-04-26.

Automatic conversion script
Id: cif_fix_values 4973 2017-02-22 13:04:09Z antanas 

 Adding full bibliography for 7156702--7156705.cif.
;
_cod_original_cell_volume        2222.4(8)
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_shelx_res_checksum              49335