35276-83-6Relevant articles and documents
Reaction of 1,3-Bis(het)arylmonothio-1,3-diketones with Sodium Azide: Regioselective Synthesis of 3,5-Bis(het)arylisoxazoles via Intramolecular N-O Bond Formation
Antony P, Mary,Balaji, Gantala L.,Iniyavan, Pethaperumal,Ila, Hiriyakkanavar
, p. 15422 - 15436 (2020/11/30)
An efficient new synthesis of 3,5-bis(het)arylisoxazoles, involving the reaction of 1,3-bis(het)arylmonothio-1,3-diketones with sodium azide in the presence of IBX catalyst, has been reported. The reaction proceeds at room temperature in high yields and is applicable to a broad range of substrates including the synthesis of 5-methyl-3-arylisoxazoles, a key subunit present in several β-lactamase-resistant antibiotics. A probable mechanism for the formation of isoxazoles has been suggested. A few of the 5-styryl/arylbutadienyl-3-(het)arylisoxazoles have also been synthesized by reacting the corresponding 1-(het)aryl-1-(methylthio)-4-(het)arylidene-but-1-en-3-ones with sodium azide at higher temperatures. The reaction of β-ketodithioesters with sodium azide is shown to furnish β-ketonitriles in good yields.
One-pot synthesis of benzoylacetonitriles through sequential Pd-catalyzed carbonylation and decarboxylation
Lee, Sunwoo,Kim, Han-Sung,Min, Hongkeun,Pyo, Ayoung
, p. 239 - 242 (2015/12/31)
Benzoylacetonitrile were prepared through sequential carbonylation and decarboxylation. The palladium-catalyzed carbonylation of aryl iodides and methyl cyanoacetate using Mo(CO)6 as a carbon monoxide source afforded beta-keto cyanoesters, and then the subsequent reaction with Li/H2O produced the desired benzoylacetonitriles.
Cascade synthesis of 3-aza-bicyclo[3.1.0]hex-2-ene derivatives from N-allyl enamines
Zhai, Sheng-Xian,Dong, Hong-Ru,Chen, Zi-Bao,Hu, Yi-Ming,Dong, Heng-Shan
, p. 8405 - 8412 (2015/03/04)
An efficient iodine-mediated cascade synthesis of 3-aza-bicyclo[3.1.0]hex-2-ene derivatives from easily prepared N-allyl enamines has been developed. The advantages of the reaction include facilitative preparation of substrates 3a-t, good functional group tolerance and transition-metal-free conditions.