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Studies on N-heterocyclic Carbene-catalyzed Oxidative Esterification of Aldehydes with Alcohols or Phenols and Rongalite -pro Moted Synthesis of Diarylsulfide

Author: ChengShuangHua
Tutor: WuHuaYue
School: Wenzhou University
Course: Organic Chemistry
Keywords: N - heterocyclic carbenes Oxidative Esterification Formaldehyde sulfoxylate sodium Diaryl sulfide
CLC: O621.25
Type: Master's thesis
Year: 2010
Downloads: 61
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Abstract


Carboxylic acid esters and aryl sulfide is an important organic synthesis intermediates, many of the biological activity and the drug molecules are esters and aryl sulfide - containing structure , they are widely used in the field of organic synthesis, pharmaceutical and polymer materials . This paper around these two substances of Organic Synthesis Research . This thesis is divided into two parts : ( 1 ) the N - heterocyclic carbene catalyzed hydroformylation and oxidation of the alcohol ( phenol) esterification reaction of synthetic carboxylic acid ester ; (2) sodium formaldehyde sulfoxylate for diaryl sulfide nitroaromatic reaction synthesis of diaryl sulfide . The first part reviews the recent progress of the esterification reaction of aldehydes and alcohols ( phenols ) oxidation and N-heterocyclic carbene catalytic reaction of small organic molecules ; heterocyclic carbene -catalyzed aldehyde and alcohol in the air ( the esterification reaction of the oxidation of the phenol) . N-heterocyclic carbene catalyzed aldehyde oxidation of alcohols ( phenols) esterification reaction with metal catalysis, simple operation , mild reaction conditions , can also apply to the advantages of the oxidative esterification reaction of aldehydes and alcohols ( phenols ) . The second part reviews the recent decades aryl thioethers Progress in the synthesis of the compounds , and formaldehyde sodium bisulfate to promote the the diaryl disulfide nitroaromatic reaction synthesis method of asymmetric diaryl sulfide . We have developed the synthesis of diaryl sulfide method uses non-toxic , no odor substrates diaryl disulfide , and avoid the use of traditional craft mercaptan ( phenol ) . In addition, the method without metal catalyst , simple operation , mild reaction conditions , as well as the advantages of high chemical selectivity to provide a new method for the asymmetric synthesis of diaryl sulfide .

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CLC: > Mathematical sciences and chemical > Chemistry > Organic Chemistry > Organic Chemistry general issues > Properties of organic compounds > Chemical properties of organic reactions
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