Name is 2-Oxo-2,3-dihydrobenzo[d]oxazole-6-carboxylic acid, as a common heterocyclic compound, it belongs to benzoxazole compound, and cas is 54903-16-1, its synthesis route is as follows.
i. 2-oxo-2,3-dihydro-benzooxazole-6-carbonic-acid 13 (38.6 mg, 0.22 mmol), intermediate 12 (95.5 mg, 0.22 mmol) and 4-methylmorpholine (0.72 mL, 0.66 mmol) were given to DMF (3 mL). N-(3-dimethylaminopropyl)-N’- ethylcarbodiimide hydrochloride (41.4 mg, 0.22 mmol) and 1- hydroxybenzotriazolehydrate (29,2 mg, 0.2 mmol) were added at RT. It was stirred for 15 h at RT. The reaction mixture was poured onto water and extracted twice with ethyl acetate. The pooled organic phases were dried over sodium sulphate, filtrated and concentrated in vacuo until dryness. The oily residue was comminuted with diethyl ether, and the emerging solid was filtered off. A colourless solid (14, 50.4 mg, 0.09 mmol, 44%) in high purity was yielded.
54903-16-1, In the field of chemistry, the synthetic routes of compounds are constantly being developed and updated. I will also mention this compound in other articles.,54903-16-1 ,2-Oxo-2,3-dihydrobenzo[d]oxazole-6-carboxylic acid, other downstream synthetic routes, hurry up and to see
Reference：
Patent; MERCK PATENT GMBH; SCHIEMANN, Kai; SCHULTZ, Melanie; STAEHLE, Wolfgang; WO2010/115491; (2010); A2;,
Benzoxazole – Wikipedia
Benzoxazole | C7H5NO – PubChem