Day: June 4, 2021

19932-85-5, 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. 6-Bromobenzo[d]oxazol-2(3H)-one, cas is 19932-85-5,the benzoxazole compound, it is a common compound, a new synthetic route is introduced below.

To a solution of XXXV-2b (500 mg, 2.97 mmol) in dry DCM (20 mL) was added TEA (360 mg, 3.56 mmol) and Trt-Cl (992 mg, 3.56 mmol). The mixture was stuffed overnight at rt, then poured into water, extracted with DCM (50 mLx3). The combined organic layer was washed with brine, dried over anhydrous Na2SO4, and concentrated in vacuo. The residue was purified by column chromatography on silica gel (PE/EA=10/1) to afford XXXV-3b (1.2 g, 89% yield).

Chemical properties determine the actual use. Each compound has specific chemical properties and uses. We look forward to more synthetic routes in the future to expand reaction routes of 19932-85-5, 6-Bromobenzo[d]oxazol-2(3H)-one

Reference：
Patent; INTERMUNE, INC.; RAMPHAL, Johnnie, Y.; BUCKMAN, Brad, Owen; EMAYAN, Kumaraswamy; NICHOLAS, John, Beamond; SEIWERT, Scott, D.; WO2015/153683; (2015); A1;,
Benzoxazole – Wikipedia
Benzoxazole | C7H5NO – PubChem

81900-93-8, 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. 4-Aminobenzo[d]oxazol-2(3H)-one, cas is 81900-93-8,the benzoxazole compound, it is a common compound, a new synthetic route is introduced below.

4-trifluoromethylphenylacetic acid (453 mg, 2.2 mmol) was dissolved in 20 ml of THF and at 0C DEPC (0.43 ml, 1.3equiv) and amine lb (400 mg, 2.66 mmol) were added to the solution. The mixture was warmed at 80C overnight, then evaporated and the crude was dissolved in AcOEt (30 ml) and washed with water (1 X 20 ml) and brine. The organic phase was dried over sodium sulfate and concentrated under vacuum. The purification of the crude residue by chromatographic column using AcOEt as eluant gave 360 mg of a white solid. Yield = 48% ‘HNMR (DMSO, 200 MHz) delta 3.80 (2H, s), 7.10 (3H, m), 7.58 (2H, d, J = 8.4 Hz), 7.70 (2H, d, J = 8.2 Hz), 10.06 (1H, bs), 1 1.14 (1H, bs); [M+1] 336.9 (deHnFsNaOs requires 336.3).

The chemical industry reduces the impact on the environment during synthesis,81900-93-8,4-Aminobenzo[d]oxazol-2(3H)-one,I believe this compound will play a more active role in future production and life.

Reference：
Patent; PHARMESTE S.R.L.; NAPOLETANO, Mauro; TREVISANI, Marcello; PAVANI, Maria Giovanna; FRUTTAROLO, Francesca; WO2011/120604; (2011); A1;,
Benzoxazole – Wikipedia
Benzoxazole | C7H5NO – PubChem

4570-41-6, 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-2-amine, cas is 4570-41-6,the benzoxazole compound, it is a common compound, a new synthetic route is introduced below.

2-Bromo-5-fluoropyridine (1 ) (1 .0g, 5.71 mmol), benzo[d]oxazol-2-amine (2) (766mg, 5.71 mmol), Xantphos (0.33g, 0.57mmol), and Cs2C03 (2.79g, 8.56mmol) were combined in dry 1 ,4-dioxane (15mL). The reaction mixture was degassed with N2(g) and placed under vacuum for 10min. Pd2(dba)3 (0.261 g, 0.28mmol) was then added and the resulting reaction mixture was heated at 90°C for 30h. It was then poured onto demineralized water (200ml_), and extracted with EtOAc (3 x 100ml_). The organic phases were combined, dried over Na2S04, filtered and subsequently concentrated in vacuo. The resulting residue was purified by flash chromatography with EtOAc/Hexane (1 : 1 ) to provide N-(5-fluoropyridin-2-yl)benzo[d]oxazol-2-amine (3) as a yellow solid (0.6g, 46percent). LCMS (ES): Found 230.1 [M+H]+

Chemical properties determine the actual use. Each compound has specific chemical properties and uses. We look forward to more synthetic routes in the future to expand reaction routes of Benzo[d]oxazol-2-amine, 4570-41-6

Reference：
Patent; KARUS THERAPEUTICS LTD; SHUTTLEWORTH, Stephen Joseph; WHALE, Andrew David; (145 pag.)WO2017/29514; (2017); A1;,
Benzoxazole – Wikipedia
Benzoxazole | C7H5NO – PubChem

81282-60-2, 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. 7-Aminobenzo[d]oxazol-2(3H)-one, cas is 81282-60-2,the benzoxazole compound, it is a common compound, a new synthetic route is introduced below.

A solution of Ms20 (32 1 g, 184.8 mmol) in MeCN (200 mL) was cooled to < -5 C (ice/H20 salt) and sequentially were added a solution of N-benzyl-bis(2- hydroxyethyl)amine (16.4 g, 84.1 mmol) in MeCN (50 mL), Et3N (36 mL, 255 mmol, 3.8 eq.), and MsOH (13.1 mL, 202 mmol, 3 eq.) while maintaining the temperature below 10C. 7-Aminobenzo[d]oxazol-2(3H)-one (10.0 g, 67.2 mmol) was added as a solid and the mixture was heated to reflux. Et3N (28.5 mL, 202 mmol) was added drop- wise over a period of 1.5 hour. Reflux was maintained for 18 additional hours. The resulting clear solution was allowed to cool to RT and concentrated in vacuo at 70C. The residue was separated between NaHCC (0.8 L) and EtOAc (0.4 L). The aqueous layer was extracted with EtOAc (3 x 0.2 L). The combined organic layers were washed with brine, dried (NaiSC^) and concentrated to afford 7-(4-benzylpiperazin-l- yl)benzo[d]oxazol-2(3H)-one as a white solid (20.2 g, 65.3 mmol, 97%). The chemical industry reduces the impact on the environment during synthesis,81282-60-2,7-Aminobenzo[d]oxazol-2(3H)-one,I believe this compound will play a more active role in future production and life. Reference：
Patent; AAPA B.V.; HEERES, Andre; WILLIGERS – HOGG, Sandra; BORST, Marcus Leonardus Gerardus; DROeGE, Melloney Joyce; WO2015/69110; (2015); A1;,
Benzoxazole – Wikipedia
Benzoxazole | C7H5NO – PubChem

Name is 5-Fluoro-2-methylbenzo[d]oxazole, as a common heterocyclic compound, it belongs to benzoxazole compound, and cas is 701-16-6, its synthesis route is as follows.

General procedure: The SBOs were prepared by the base-catalysed condensation of the appropriate 5-halogeno-2-methylbenzoxazole with the requisite aromatic aldehyde under phase transfer conditions. In a typical experiment, equimolar quantities (5 mmol) of the starting materials were dissolved in dichloromethane (20-50 ml) in the presence of benzyltriethylammonium chloride (3 mmol) and stirred magnetically under a nitrogen atmosphere as an aqueous solution of sodium hydroxide (50%, w/v, 5 ml) was added dropwise over a period of 10 min. After being stirred for 2-36 h until analytical thin layer chromatography indicated that the reaction was complete, the mixture was diluted with water (50 ml) and the SBO was extracted with dichloromethane (3×20 ml), dried (MgSO4), filtered, evaporated under reduced pressure and recrystallized from aqueous methanol or ethanol.

701-16-6, 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.,701-16-6 ,5-Fluoro-2-methylbenzo[d]oxazole, other downstream synthetic routes, hurry up and to see

Reference：
Article; Ayrton, Stephen T.; Panova, Jekaterina; Michalik, Adam R.; Martin, William H.C.; Gallagher, Richard T.; Bowen, Richard D.; International Journal of Mass Spectrometry; vol. 345-347; (2013); p. 120 – 131;,
Benzoxazole – Wikipedia
Benzoxazole | C7H5NO – PubChem

Name is 6-Bromobenzo[d]oxazole, as a common heterocyclic compound, it belongs to benzoxazole compound, and cas is 375369-14-5, its synthesis route is as follows.

6-Bromobenzo[d]oxazole (0.600 g, 3.03 mmol), anhydrous potassium acetate (0.595 g, 6.06 mmol) and 4,4,4′,4′,5,5,5′,5′-octamethyl-2,2′-bi(1,3,2-dioxaborolane) (0.846 g, 3.33 mmol) were combined in dry dioxane (10 mL), and the mixture was sparged with nitrogen for 15 min. The reaction mixture was treated with Pd(dppf)Cl2 (0.124 mg, 0.152 mmol) and was heated to 90C for 16 h After cooling, the mixture was shaken with EtOAc (45 mL) and satd NaCl (10 mL) and was filtered to remove dark solids. The organic phase was dried and concentrated. Purification by silica gel chromatography with 0-30% EtOAc-hexane afforded the title compound as white crystals (600 mg, 74%): mp 79-81 C; NMR (400 MHz, CDCl3) delta 8.13 (s, 1H), 8.04 (s, 1H), 7.80 (qt, / = 3.3, 1.8 Hz, 2H), 1.37 (s, 12H); EIMS m/z 245.

375369-14-5, 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.,375369-14-5 ,6-Bromobenzo[d]oxazole, other downstream synthetic routes, hurry up and to see

Reference：
Patent; DOW AGROSCIENCES LLC; BELL, Jared; BUYSSE, Ann M.; DAEUBLE, John F.; ECKELBARGER, Joseph D.; EPP, Jeffrey B.; IRVINE, Nicholas M.; KISTER, Jeremy; LO, William C.; LOSO, Michael R.; LOWE, Christian T.; ROHANNA, John C.; SATCHIVI, Norbert M.; SIDDALL, Thomas L.; STEWARD, Kimberly M.; YERKES, Carla N.; (281 pag.)WO2019/84353; (2019); A1;,
Benzoxazole – Wikipedia
Benzoxazole | C7H5NO – PubChem

As a common heterocyclic compound, it belongs to benzoxazole compound, name is Benzo[d]oxazole-2-thiol, and cas is 2382-96-9, its synthesis route is as follows.

General procedure: A mixture of 2-mercaptobenzoxazole (2a, X = O), 2-mercaptobenzthiazole (2b,X = S) (10 mmol), 2-chloroacetic acid (10 mmol), K2CO3 (10 mmol), DMF (10 mL),and TBAB as a PTC was stirred for 1-2 h at r.t. After completion of reaction, the mixturewas cooled to r.t. and treated with acetic acid until neutralized. The separated solid wasfiltered, washed with water (2 × 40 mL), and dried to obtain crude 3a,b. The latter onrecrystallization from suitable solvent gave pure 3a,b.

2382-96-9, 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.,2382-96-9 ,Benzo[d]oxazole-2-thiol, other downstream synthetic routes, hurry up and to see

Reference：
Article; Rafeeq, Mohammad; Ramana Reddy, Chittireddy Venkata; Dubey, Pramod Kumar; Phosphorus, Sulfur and Silicon and the Related Elements; vol. 190; 11; (2015); p. 1857 – 1864;,
Benzoxazole – Wikipedia
Benzoxazole | C7H5NO – PubChem

Name is Benzo[d]oxazol-2-amine, as a common heterocyclic compound, it belongs to benzoxazole compound, and cas is 4570-41-6, its synthesis route is as follows.

Example 1 ethyl 6-hydroxy-4-oxo-1,2-dihydro-4H-pyrrolo [3,2,1-ij] quinoline-5-carboxylate (130 mg, 0.50 mmol) and benzo[d]oxazol-2-amine (80 mg, 0.60 mmol) is dissolved in DMF (2 mL) and placed in a sealed tube, heated at 160C for 30 minutes, Cooled slowly to room temperature. The resulting solid was filtered and washed with ethanol to give the target compound (KCNS-SM-31); 73 mg, 42% yield).

4570-41-6, 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.,4570-41-6 ,Benzo[d]oxazol-2-amine, other downstream synthetic routes, hurry up and to see

Reference：
Patent; Korea Research Institute of Chemical Technology; Park Cheol-min; Lee Seon-gyeong; Song Jong-hwan; (39 pag.)KR2019/67546; (2019); A;,
Benzoxazole – Wikipedia
Benzoxazole | C7H5NO – PubChem

64037-15-6, 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. 5-Methyl-2-aminobenzoxazol, cas is 64037-15-6,the benzoxazole compound, it is a common compound, a new synthetic route is introduced below.

In 2500 ml of anhydrous toluene, succinic anhydride (Mol. Wt.: 100.07, 141.1 g, 1.41 mol) and 70 g (about 0.47 mol) of compound from Step 9a were added under stirred condition, and then the mixture was refluxed for overnight. After that, 100 g (0.26 mol) of HATU and 41.36 ml (0.376 mol) of 4-methylpholine were added and then the resulting mixture was refluxed for 2-3 hours. TLC showed that the major spot was product and its TLC RF value is about 0.45 in solution of acetone and hexane by the ratio of 1 to 2. After reaction was completed, the solvent was evaporated and the residues was dissolved in about 2000 ml of CH2Cl2, the solution was treated with aqueous NaHCO3 and CO2 was generated during stirring. After pH was adjusted to be about 7-8 and washed with brine, organic phase was separated and dried over MgSO4. Filtration and removal of solvent gave about 98 g of crude desired product as fine white needle crystalline. MS(ESI): m/e (M+H) 231.

Chemical properties determine the actual use. Each compound has specific chemical properties and uses. We look forward to more synthetic routes in the future to expand reaction routes of 5-Methyl-2-aminobenzoxazol, 64037-15-6

Reference：
Patent; Xu, Guoyou; Gai, Yonghua; Wang, Guoqlang; Or, Yat Sun; Wang, Zhe; US2007/207972; (2007); A1;,
Benzoxazole – Wikipedia
Benzoxazole | C7H5NO – PubChem

As a common heterocyclic compound, it belongs to benzoxazole compound, name is Methyl 2-mercaptobenzo[d]oxazole-6-carboxylate, and cas is 72752-81-9, its synthesis route is as follows.

To a suspension of compound 5.3 (320 g, 1.53 mol) and K2CO3 (276 g, 2 mol) in EtOAC (3 L) was added MeI (238.9 g, 1.68 mol) below 20 C. The mixture was stirred at room temperature for 12 hours. TLC (EtOAc/petroleum ether=1:3) indicated the reaction was complete. Water (2 L) was added to the mixture. The organic phase was separated, dried over Na2SO4 and concentrated to give 5.4 (320 g, 93.8%) as a pink solid.

72752-81-9, 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.,72752-81-9 ,Methyl 2-mercaptobenzo[d]oxazole-6-carboxylate, other downstream synthetic routes, hurry up and to see

Reference：
Patent; TIBOTEC BVBA; US2010/305073; (2010); A1;,
Benzoxazole – Wikipedia
Benzoxazole | C7H5NO – PubChem