78443-35-3Relevant articles and documents
Deadly KCN and pricey metal free track for accessing β-ketonitriles employing mild reaction conditions
Sharma, Pawan K.,Kumar, Rajiv,Ram, Sita,Chandak, Navneet
supporting information, p. 1847 - 1856 (2021/04/26)
A one pot synthesis of β-ketonitriles from readily accessible 3-chloropropenals using economically benign iodine, aqueous ammonia and sodium hydroxide solution, employing mild reaction conditions have been described. This report presents a convenient, inexpensive, highly toxic-matter-free and eco-friendly approach for β-ketonitriles.
Method for synthesizing beta-ketonitrile and derivatives thereof
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Paragraph 0061-0065, (2021/04/21)
The invention discloses a method for synthesizing beta-ketonitrile and derivatives thereof. The beta-ketonitrile is prepared by a reaction of malononitrile and derivatives thereof with arylboronic acid. According to the invention, reactants are wide in source and low in cost; the reaction is carried out in a solvent, and the solvent is a mixture of toluene and water; in the process of the reaction, a palladium catalyst, an acid additive and a ligand are also added into the solvent; the acidic additive is any one selected from benzenesulfonic acid, p-toluenesulfonic acid, p-nitrobenzenesulfonic acid, trifluoromethanesulfonic acid and trifluoroformic acid; and the ligand is any one selected from 4,4'-dimethyl-2,2'-bipyridyl, 6,6'-dimethyl-2,2'-bipyridyl and 5,5'-dimethyl-2,2'-bipyridyl. The method in the invention can directly synthesize the target product in one step, does not need to separate an intermediate product, can obtain the target product only by a stirring reaction under normal pressure, has the highest yield of 98%, is especially suitable for synthesis of beta-ketonitrile derivatives sensitive to alkaline conditions, and provides better guarantee for development of organic compounds related to beta-ketonitrile derivatives.
Asymmetric Hydroacylation Involving Alkene Isomerization for the Construction of C3-Chirogenic Center
Liu, Chong,Yuan, Jing,Zhang, Zhenfeng,Gridnev, Ilya D.,Zhang, Wanbin
supporting information, p. 8997 - 9002 (2021/03/16)
A new transformation pattern for enantioselective intramolecular hydroacylation has been developed involving an alkene isomerization strategy. Proceeding through a five-membered rhodacycle intermediate, 3-enals were converted to C3- or C3,C5-chirogenic cyclopentanones with satisfactory yields, diastereoselectivities, and enantioselectivities. A catalytic cycle has been theoretically calculated and the origin of the stereoselection is rationally explained.