Reactions of 1,2-diaza-1,3-butadienes with propargyl alcohol as an approach to novel bi-heterocyclic systems.
De Crescentini, L.; Perrulli, F. R.; Favi, G.; Santeusanio, S.; Giorgi, G.; Attanasi, O. A.; Mantellini, F.; Organic & biomolecular chemistry 14 (2016) 8674–8678; doi:10.1039/c6ob01595f

data_7155270
_publ_section_title
;
 Reactions of 1,2-diaza-1,3-butadienes with propargyl alcohol as an
 approach to novel bi-heterocyclic systems.
;
_journal_issue                   37
_journal_name_full               'Organic &amp; biomolecular chemistry'
_journal_page_first              8674
_journal_page_last               8678
_journal_paper_doi               10.1039/c6ob01595f
_journal_volume                  14
_journal_year                    2016
_chemical_formula_moiety         'C7 H8 N2 O2'
_chemical_formula_sum            'C7 H8 N2 O2'
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_chemical_name_systematic
;
9-Methyl-1-oxa-7,8-diazaspiro[4.4]nona-3,8-dien-6-one
;
_space_group_crystal_system      monoclinic
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_symmetry_space_group_name_Hall  '-P 2yn'
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;
2016-04-15 deposited with the CCDC.
2016-08-25 downloaded from the CCDC.
;
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CrysAlisPro, Oxford Diffraction Ltd.,
Version 1.171.33.42 (release 29-05-2009 CrysAlis171 .NET)
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CrysAlisPro, Oxford Diffraction Ltd.,
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CrysAlisPro, Oxford Diffraction Ltd.,
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;
CrysAlisPro, Agilent Technologies,
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Empirical absorption correction using spherical harmonics,
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;
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.392
_exptl_crystal_description       prism
_exptl_crystal_F_000             320
_exptl_crystal_size_max          0.4
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_refine_ls_extinction_coef       0.074(7)
_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^
_refine_ls_extinction_method     SHELXL
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_refine_ls_number_parameters     102
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_refine_ls_R_factor_all          0.0724
_refine_ls_R_factor_gt           0.0473
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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^)+(0.0394P)^2^+0.1261P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0968
_refine_ls_wR_factor_ref         0.1132
_reflns_Friedel_coverage         0.000
_reflns_number_gt                1169
_reflns_number_total             1675
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            c6ob01595f2.cif
_cod_data_source_block           spiro
_cod_depositor_comments
;Adding full bibliography for 7155270.cif.

 Adding full bibliography for 7155270.cif.
;
_cod_original_cell_volume        725.85(15)
_cod_database_code               7155270