Lewis acid-catalyzed [3 + 2] annulations of oxindole based spirocyclic donor-acceptor cyclopropanes with ynamides.
Zhang, Dongxin; Cheng, Qihang; Chen, Lvjia; Deng, Huiqing; Cai, Hu; Zhang, Qian-Feng; Organic & biomolecular chemistry 19 (2021) 9645–9648; doi:10.1039/d1ob01922h

data_7158375
_publ_section_title
;
 Lewis acid-catalyzed [3 + 2] annulations of oxindole based spirocyclic
 donor-acceptor cyclopropanes with ynamides.
;
_journal_issue                   44
_journal_name_full               'Organic &amp; biomolecular chemistry'
_journal_page_first              9645
_journal_page_last               9648
_journal_paper_doi               10.1039/d1ob01922h
_journal_volume                  19
_journal_year                    2021
_chemical_formula_sum            'C34 H32 N2 O4 S'
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_chemical_name_systematic
N-((1R,4R)-4-(4-methoxyphenyl)-1'-methyl-2'-oxo-3-phenylspiro[cyclopentane-1,3'-indolin]-2-en-2-yl)-N,4-dimethylbenzenesulfonamide
_space_group_crystal_system      monoclinic
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_audit_update_record
;
2021-08-28 deposited with the CCDC.	2021-10-27 downloaded from the CCDC.
;
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_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
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'w=1/[\s^2^(Fo^2^)+(0.1000P)^2^+0.5893P] where P=(Fo^2^+2Fc^2^)/3'
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_reflns_threshold_expression     'I > 2\s(I)'
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_cod_depositor_comments          'Adding full bibliography for 7158375.cif.'
_cod_original_cell_volume        2912.3(10)
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