1,6-Conjugate addition initiated formal [4+2] annulation of p-quinone methides with sulfonyl allenols: a unique access to spiro[5.5]undeca-1,4-dien-3-one scaffolds.
Ghotekar, Ganesh S.; Shirsath, Sachin R.; Shaikh, Aslam C.; Muthukrishnan, M.; Chemical communications (Cambridge, England) 56 (2020) 5022–5025; doi:10.1039/d0cc01005g

data_7126263
_publ_section_title
;
 1,6-Conjugate addition initiated formal [4+2] annulation of p-quinone
 methides with sulfonyl allenols: a unique access to
 spiro[5.5]undeca-1,4-dien-3-one scaffolds.
;
_journal_issue                   37
_journal_name_full               'Chemical communications (Cambridge, England)'
_journal_page_first              5022
_journal_page_last               5025
_journal_paper_doi               10.1039/d0cc01005g
_journal_volume                  56
_journal_year                    2020
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_atom_sites_solution_hydrogens   geom
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_audit_update_record
;
2019-08-30 deposited with the CCDC.	2020-03-19 downloaded from the CCDC.
;
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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^)+(0.0460P)^2^+1.5721P] 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 7126263.cif.'
_cod_original_sg_symbol_H-M      'P 21/c'
_cod_database_code               7126263
_shelx_shelxl_version_number     2014/7
_shelx_estimated_absorpt_t_min   0.941
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_shelx_res_checksum              66519
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