Unexpected ring opening of pyrazolines with activated alkynes: synthesis of 1<i>H</i>-pyrazole-4,5-dicarboxylates and chromenopyrazolecarboxylates.
Kolla, Sai Teja; Rayala, Nageswara Rao; Sridhar, Balasubramanian; Bhimapaka, China Raju; Organic & biomolecular chemistry 20 (2022) 334–338; doi:10.1039/d1ob01727f

data_7158435
_publ_section_title
;
 Unexpected ring opening of pyrazolines with activated alkynes: synthesis
 of 1<i>H</i>-pyrazole-4,5-dicarboxylates and
 chromenopyrazolecarboxylates.
;
_journal_issue                   2
_journal_name_full               'Organic &amp; biomolecular chemistry'
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_journal_page_last               338
_journal_paper_doi               10.1039/d1ob01727f
_journal_volume                  20
_journal_year                    2022
_chemical_formula_moiety         'C17 H20 N2 O5'
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_audit_update_record
;
2021-03-15 deposited with the CCDC.	2021-12-06 downloaded from the CCDC.
;
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_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^
_refine_ls_extinction_method     'SHELXL-2018/3 (Sheldrick 2018)'
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_refine_ls_structure_factor_coef Fsqd
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'w=1/[\s^2^(Fo^2^)+(0.0398P)^2^+0.5018P] where P=(Fo^2^+2Fc^2^)/3'
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_reflns_number_gt                2783
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_reflns_threshold_expression     'I > 2\s(I)'
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_cod_depositor_comments
'Adding full bibliography for 7158434--7158435.cif.'
_cod_original_sg_symbol_H-M      'P 21/c'
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_shelx_res_checksum              8501