136992-95-5, In the next few decades, the world population will flourish. As the population grows rapidly and people all over the world use more and more resources, all industries must consider their environmental impact. Benzo[d]oxazol-7-amine, cas is 136992-95-5,the benzoxazole compound, it is a common compound, a new synthetic route is introduced below.
A mixture of benzooxazol-7-amine (135 mg, 1.01 mmol, Astrazeneca, PCT Appl. WO2003053960), 2.4-dichloropyrimidine (150 mg, 1.01 mmol), DBU (0.197 ml, 1.32 mmol), 4,5-bis(diphenylphosphino)-9,9-dimethylxanthene (58 mg, 0.1 mmol, also named xantphos) and tris(dibenzylideneacetone)dipalladium(0) (58 mg, 0.1 mmol, also named Pd2dba3) in dioxane (3 ml) under argon was irradiated in a Personal Chemistry EMRYS Optimizer EXP microwave synthesisor at 110 C. for 10 minutes. After cooling and evaporation of the solvents, the residue was dissolved in DCM and purified by chromatography on silica gel (eluant: 30% to 60% EtOAc in petroleum ether) to give N-(2-chloropyrimidin-4-yl)benzooxazol-7-amine (88 mg, 35%) as a beige solid. Mass spectrum: MH+ 247
The chemical industry reduces the impact on the environment during synthesis,136992-95-5,Benzo[d]oxazol-7-amine,I believe this compound will play a more active role in future production and life.
Reference:
Patent; AstraZeneca AB; US2011/46108; (2011); A1;,
Benzoxazole – Wikipedia
Benzoxazole | C7H5NO – PubChem