140935-01-9Relevant academic research and scientific papers
EXPANDING THE CHEMICAL SUBSTRATES FOR GENETIC CODE REPROGRAMMING TO INCLUDE LONG CHAIN CARBON AND CYCLIC AMINO ACIDS
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Paragraph 00333-00337, (2021/11/06)
Disclosed are methods, systems, components, and compositions for synthesis of sequence defined polymers. The methods, systems, components, and compositions may be utilized for incorporating novel substrates that include non-standard amino acid monomers an
Preparation method of cyanomethyl ester
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Paragraph 0083; 0084, (2016/10/08)
The invention discloses a preparation method of cyanomethyl ester. In the presence of an oxidizing agent, a carboxylic acid compound and cyanoacetic acid are used as reactants, iodide is used as a catalyst, and sodium acetate is used as alkali, so as to p
Cyanoacetic Acid as a Masked Electrophile: Transition-Metal-Free Cyanomethylation of Amines and Carboxylic Acids
Wang, Hongxiang,Shao, Ying,Zheng, Hao,Wang, Hanghang,Cheng, Jiang,Wan, Xiaobing
supporting information, p. 18333 - 18337 (2015/12/24)
Using cyanoacetic acid as a masked electrophile, a new cyanomethylation reaction of amines and carboxylic acids was developed, producing a variety of α-aminonitriles and cyanomethyl esters with good yields and excellent functionality tolerance. This protocol features simple manipulation, inexpensive reagents, and a wide substrate scope. Iodoacetonitrile was generated in situ from the iodination-decarboxylation of cyanoacetic acid in this transformation.
Titanium-mediated addition of grignard reagents to acyl cyanohydrins: Aminocyclopropane versus 1,4-diketone formation
Setzer, Paul,Forcher, Gwenael,Boeda, Fabien,Pearson-Long, Morwenna S. M.,Bertus, Philippe
supporting information, p. 171 - 180 (2014/01/06)
The 1,2-dianion reactivity of the reagent generated from EtMgBr and titanium isopropoxide was illustrated when N-acyl cyanohydrins were used as substrates (>20 examples), giving both aminocyclopropane derivatives and 1,4-dicarbonyl compounds. When the reaction was performed in diethyl ether, 5-hydroxy-1,4-diketones were the main product. Under specific conditions (use of tetrahydrofuran and a bulky carboxylic moiety), the cyclopropane derivatives were obtained in good yields. The observed dichotomy may be explained by a ring-opening of the five-membered titanacycle intermediate followed by a nonselective acyl addition. The 1,2-dianion reactivity of the reagent generated from EtMgBr and Ti(OiPr)4 was illustrated when N-acyl cyanohydrins were used as substrates (>20 examples). When the reaction was performed in diethyl ether, 1,4-diketones were mainly isolated. Under certain conditions, cyclopropane derivatives were also obtained in good yields. A mechanism rationalizing this dichotomy is presented. Copyright
Titanium-mediated synthesis of 1,4-diketones from grignard reagents and acyl cyanohydrins
Setzer, Paul,Beauseigneur, Alice,Pearson-Long, Morwenna S. M.,Bertus, Philippe
supporting information; experimental part, p. 8691 - 8694 (2011/01/10)
Double duty: In the presence of titanium isopropoxide, Grignard reagents were found to react with acyl cyanohydrins to give substituted 5-hydroxy-1,4-diketones (see scheme). This new reaction involves a formal addition of a 1,2-dianion equivalent to both the ester and nitrile moieties.
Cyanomethyl esters: Useful protection for carboxylic acids
Hugel,Bhaskar,Longmore
, p. 693 - 697 (2007/10/02)
The alkylation of carboxylate salts with chloroacetonitrile yields cyanomethyl esters. Deprotection of the carboxyl group is most readily performed by stirring with an aqueous solution of sodium sulfide.
