Reference of 6274-22-2,Some common heterocyclic compound, 6274-22-2, name is 4-Amino-N-methylbenzamide, molecular formula is C8H10N2O, traditional synthetic route has been very mature, but the traditional synthetic route has various shortcomings, such as complicated route, low yield, poor purity, etc, below Introduce a new synthetic route.
Example 5 Method H: 4-(4-(5,6,7,8-tetrahydro-7,7-dimethyl-4-oxo-4H-thiazolo[5,4-c]azepin-2-yl)pyridin-2-ylamino)-N-methylbenzamide (I-5) 2-(2-chloropyridin-4-yl)-5,6,7,8-tetrahydro-7,7-dimethylthiazolo[5,4-c]azepin-4-one (70 mg, 1.0 Eq.), 4-amino-N-methyl-benzamide (41 mg, 1.2 Eq.), NaOtBu (61 mg, 2.8 Eq.), Pd(OAc)2 (5 mg, 0.1 Eq.) were suspended/dissolved in dry toluene and degassed (vacuum/N2 cycles*5). 2-Di-tert-butylphosphino)biphenyl (143 mg, 0.2 Eq.) was then added. The resultant mixture was then refluxed overnight. A further portion of NaOtBu (61 mg, 2.8 Eq.), Pd(OAc)2 (5 mg, 0.1 Eq.) and 2-(di-tert-butylphosphino)biphenyl (14 mg, 0.2 Eq.) were added, followed by dry dioxane (0.5 mL). The resultant mixture was refluxed for a further night. The reaction mixture was allowed to cool to RT, partitioned between EtOAc/MeOH (3:1)/NH4Cl, and then extracted into EtOAc/MeOH (3:1) (3*50 mL). The combined organic layers were washed with brine (1*20 mL), dried over Na2SO4, filtered and concentrated under reduced pressure. Purification was achieved using column chromatography (10% MeOH/90% DCM) to obtain the title compound as a bright yellow powder (18.6 mg, 19% yield); 1H NMR (DMSO D6) 1.0 (6H, s), 2.8 (3H, d), 3.0 (2H, s), 3.0 (2H, m), 7.3 (1H, m), 7.5 (1H, s), 7.8 (4H, s), 8.2 (1H, m), 8.3 (2H, m), 9.6 (1H, s); LC/MS M+1 (obs.) 422.20; LC/MS M-1 (obs.) 420.30.
These compound has a wide range of applications. It is believed that with the continuous development of the source of the synthetic route 4-Amino-N-methylbenzamide, its application will become more common.
Reference:
Patent; Vertex Pharmaceuticals Incorporated; US2009/281082; (2009); A1;,
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