Precise structure activity relationships in asymmetric catalysis using carbohydrate scaffolds to allow ready fine tuning: dialkylzinc?aldehyde additionsThis is one of a number of contributions from the current members of the Dyson Perrins Laboratory to mark the end of almost 90 years of organic chemistry research in that building, as all its current academic staff move across South Parks Road to a new purpose-built laboratory.
Emmerson, Daniel P. G.; Villard, Renaud; Mugnaini, Claudia; Batsanov, Andrei; Howard, Judith A. K.; Hems, William P.; Tooze, Robert P.; Davis, Benjamin G.; Organic & Biomolecular Chemistry 1 (2003) 3826–; doi:10.1039/b309715n

data_7151572
_publ_section_title
;
 Precise structure activity relationships in asymmetric catalysis using
 carbohydrate scaffolds to allow ready fine tuning:
 dialkylzinc?aldehyde additionsThis is one of a number of contributions
 from the current members of the Dyson Perrins Laboratory to mark the
 end of almost 90 years of organic chemistry research in that building,
 as all its current academic staff move across South Parks Road to a
 new purpose-built laboratory.
;
_journal_issue                   21
_journal_name_full               'Organic &amp;  Biomolecular Chemistry'
_journal_page_first              3826
_journal_paper_doi               10.1039/b309715n
_journal_volume                  1
_journal_year                    2003
_chemical_absolute_configuration syn
_chemical_formula_sum            'C21 H25 N O5'
_chemical_formula_weight         371.42
_chemical_melting_point          444.15
_chemical_name_systematic
;
methyl 2-N-benzylamino-4,6-O-benzylidene-2-deoxy-\a-D-glucopyranoside
;
_chemical_optical_rotation       '[\a]^25^~D~ +22 (c 0.70, CHCl~3~)'
_space_group_IT_number           4
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  'P 2yb'
_symmetry_space_group_name_H-M   'P 1 21 1'
_atom_sites_solution_hydrogens   difmap
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                90.00
_cell_angle_beta                 98.00(1)
_cell_angle_gamma                90.00
_cell_formula_units_Z            2
_cell_length_a                   6.444(1)
_cell_length_b                   11.612(2)
_cell_length_c                   12.764(2)
_cell_measurement_reflns_used    941
_cell_measurement_temperature    120(2)
_cell_measurement_theta_max      25.1
_cell_measurement_theta_min      12.0
_cell_volume                     945.8(3)
_computing_cell_refinement       'Bruker SMART'
_computing_data_collection       'Bruker SMART'
_computing_data_reduction        'Bruker SHELXTL'
_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'Bruker SHELXTL'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      120(2)
_diffrn_detector_area_resol_mean 8
_diffrn_measured_fraction_theta_full 0.997
_diffrn_measured_fraction_theta_max 0.997
_diffrn_measurement_device_type  'SMART 1K CCD area detector'
_diffrn_measurement_method       '\W scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0226
_diffrn_reflns_av_sigmaI/netI    0.0132
_diffrn_reflns_limit_h_max       8
_diffrn_reflns_limit_h_min       -8
_diffrn_reflns_limit_k_max       15
_diffrn_reflns_limit_k_min       -15
_diffrn_reflns_limit_l_max       17
_diffrn_reflns_limit_l_min       -17
_diffrn_reflns_number            11594
_diffrn_reflns_theta_full        29.00
_diffrn_reflns_theta_max         29.0
_diffrn_reflns_theta_min         1.6
_diffrn_standards_decay_%        0
_exptl_absorpt_coefficient_mu    0.093
_exptl_absorpt_correction_type   none
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.304
_exptl_crystal_density_meas      ?
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       prism
_exptl_crystal_F_000             396
_exptl_crystal_size_max          0.22
_exptl_crystal_size_mid          0.44
_exptl_crystal_size_min          0.67
_refine_diff_density_max         0.304
_refine_diff_density_min         -0.190
_refine_diff_density_rms         0.038
_refine_ls_abs_structure_details
;
undeterminable, Friedel pairs merged, all \Df'' set to 0
;
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.064
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     259
_refine_ls_number_reflns         2625
_refine_ls_number_restraints     1
_refine_ls_restrained_S_all      1.064
_refine_ls_R_factor_all          0.0358
_refine_ls_R_factor_gt           0.0344
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0566P)^2^+0.1812P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0932
_refine_ls_wR_factor_ref         0.0948
_reflns_Friedel_coverage         0.894
_reflns_number_gt                2537
_reflns_number_total             2625
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            b309715n.txt
_cod_data_source_block           4f
_cod_depositor_comments
;
The following automatic conversions were performed:
'_symmetry_cell_setting' value 'Monoclinic' changed to 'monoclinic'
according to '/home/adriana/struct/CIF-dictionaries/cif_core.dic'
dictionary named 'cif_core.dic' version 2.4.1 from 2010-06-29.

Automatic conversion script
Id: cif_fix_enum 1555 2011-01-17 13:19:09Z saulius 

The following automatic conversions were performed:

'_chemical_melting_point' value '171\% C' was changed to '444.15' -
it was converted from degrees Celsius(C) to Kelvins(K).

Automatic conversion script
Id: cif_fix_values 1569 2011-02-09 13:29:24Z adriana 

The following automatic conversions were performed:

'_exptl_crystal_density_meas' value 'Not_measured' was changed to '?'
- the value is perceived as not measured.

Automatic conversion script
Id: cif_fix_values 3008 2015-01-20 13:52:24Z robertas 
;
_cod_original_sg_symbol_H-M      P2(1)
_cod_database_code               7151572