butane-2,3-diol

Conditions: temp:0.00; pressure:0.00; stir:

Conditions: temp:0.00; pressure:0.00; stir:

Conditions: temp:0.00; pressure:0.00; stir:

Conditions: temp:0.00; pressure:0.00; stir:

Conditions: temp:0.00; pressure:0.00; stir:

Conditions: temp:0.00; pressure:0.00; stir:

Conditions: temp:0.00; pressure:0.00; stir:

Conditions: temp:0.00; pressure:0.00; stir:

Conditions: temp:0.00; pressure:0.00; stir:

Conditions: temp:0.00; pressure:0.00; stir:

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: Combined hydrolysis and fermentation of hemicelluloses for the direct production of fuels and chemicals: Xylanase enzyme preparations from 1 can be used in conjunction with fermentative organisms to simultaneously hydrolyze hemicellulose to sugars and ferment the sugars released to a variety of fuels and chemicals. An example of this is the use of Klebisella pneumoniae (Klebsiella oxytoca ATCC 8724) with the enzyme preparation to produce 2,3-butanediol, ethanol, acetoin, and acetic acid from xylan and steamexploded aspenwood hemicellulose (Table 7). with the enzyme preparation

Conditions: temp:85.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: 4-Cyanobenzeneboronic acid (171 mg, 1.16 mmol, prepared in example 25), tetrakis(triphenylphosphine)palladium(0) (69 mg, 0.063 mmol), 2 M sodium carbonate (1.6 mL), and [(2R)-2-(4-bromophenoxy)propyl][(methylethyl)sulfonyl]amine (310 mg, 0.922 mmol) were combined in a 15 mL round bottomed flask with dimethylethylene glycol (6.15 mL, DME), fitted with a condenser, stirbar, and in a temperature regulated oil bath, and refluxed in a nitrogen system to 85° C., overnight. The reaction was allowed to cool to room temperature, and quenched with 15 mL of water, and extracted three times with 15 mL ethyl acetate. The organic layer was dried with magnesium sulfate, filtered through Celite®, and concentrated under reduced pressure, yielding 470 mg viscous black oil. This material was further purified using a 4000 uM rotor on a Chromatotron® in a 1:1 hexanes:ethyl acetate solvent system yielding the final title compound (57.5 mg, 18%) as white crystals. fitted with a condenser to cool to room temperature quenched with 15 mL of water extracted three times with 15 mL ethyl acetate The organic layer was dried with magnesium sulfate filtered through Celite® concentrated under reduced pressure