41470-93-3Relevant articles and documents
Guanidinum chloride as dehydrocyclization agent in the synthesis of 2-fuctionalized (4H)-3,1-benzoxazine-4-ones
Nikpour, Farzad,Bahmani, Asrin,Havasi, Forugh,Sharafi-Kolkeshvandi, Mahnaz
, p. 34 - 37 (2014/02/14)
A facile and expedient route for the synthesis of 2-ethoxy- and 2-(ethylcarboxylate)-(4H)-3,1-benzoxazine-4-ones is described using guanidinium chloride as a safe and convenient dehydrocyclization agent. High yields of the products obtain under mild react
A phosgene and peroxide-free one-pot tandem synthesis of isatoic anhydrides involving anthranilic acid, boc anhydride and 2-chloro-N-methyl pyridinium iodide
Verma, Chhaya,Sharma, Somesh,Pathak, Arunendra
, p. 6897 - 6899 (2019/04/10)
A phosgene and peroxide-free approach for the synthesis of isatoic anhydrides has been described. The synthesis involves the carbamate formation with boc anhydride followed by in situ cyclization to afford the isatoic anhydride. The importance of this synthetic strategy is in the ease of operation, scalability and preparation from readily available raw materials.
A convenient synthesis of anthranilic acids by Pd-catalyzed direct intermolecular ortho-C-H amidation of benzoic acids
Ng, Ka-Ho,Ng, Fo-Ning,Yu, Wing-Yiu
supporting information, p. 11680 - 11682,3 (2012/12/12)
An efficient method for synthesis of anthranilic acids by Pd-catalyzed ortho-C-H amidation of benzoic acids is disclosed. The amidation is proposed to proceed by carboxylate-assisted ortho-C-H palladation to form an arylpalladium(ii) complex, followed by nitrene insertion to the Pd-C bond.
