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Synthesis of Hypervalent Iodonium Alkynyl Triflates for the Application of Generating Cyanocarbenes
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终端化物对二铁二硫酸盐的新反应

Wenguang Wang1, Thomas B Rauchfuss, Lingyang Zhu

  • 1School of Chemical Sciences University of Illinois - Urbana , Urbana, Illinois 61801, United States.

Journal of the American Chemical Society
|March 26, 2014
PubMed
概括

研究人员合成了第一个diiron dithiolato dihydride复合物Fe2(SR) 2H2,其中包括桥梁和终端化物. 这个复合体表现出分子内化物交换,并经历特定的反应,进步对二激活机制的理解.

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Preparation and Reactions of Thiols02:33

Preparation and Reactions of Thiols

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Radical substitution reactions can be used to remove functional groups from molecules. The hydrogenolysis of alkyl halides is one such reaction, where the weak Sn–H bond in tributyltin hydride reacts with alkyl halides to form alkanes. Here, the reagent Bu3SnH yields tributyltin halide as a byproduct.
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The reactions of acid anhydrides are analogous to the reactions of acid chlorides and proceed via a nucleophilic acyl substitution. They only differ in the identity of the leaving group. During an acid chloride reaction, the leaving group is a chloride ion, and the by-product is hydrochloric acid. However, in an acid anhydride reaction, the leaving group is a carboxylate ion, and the by-product is a carboxylic acid.
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Acid halides are reduced to alcohols in the presence of a strong reducing agent like lithium aluminum hydride.
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Hydrolysis of acid halides is a nucleophilic acyl substitution reaction in which acid halides react with water to give carboxylic acids. The reaction occurs readily and does not require acid or a base catalyst.
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