Category: 6633-61-0

With the rapid development and complex challenges of chemical substances, new drug synthesis pathways are usually the most effective.6633-61-0,Methyl 2-aminothiazole-5-carboxylate,as a common compound, the synthetic route is as follows.,6633-61-0

General procedure: A solution of the selected heterocyclic starting material (1.00 mmol) in THF (10 mL) and a solutionof isopentyl nitrite (141 mg, 1.20 mmol) in THF (10 mL) were both pumped at a flow rate of 0.25 mLmin1 with a Vapourtech ?Easy MedChem V3? system, meeting at a PTFE T-piece and the outputflowing through a 10.0 mL coil reactor maintained at 120 C, giving a residence time of 20 min.The pressure of the system was maintained at 7 bar with a back-pressure regulator. For compoundswhere an isolated yield was reported: the output mixture was concentrated under reduced pressureto give an oil (or powder). The oil (or powder) was purified using column chromatography withvarious mixtures of ethyl acetate and hexane as the eluent, or by recrystallisation using methanol, togive isolated compounds that showed no impurities by NMR spectroscopy. For compounds where aconversion was reported (due to volatility of products), the output mixture was carefully concentratedunder a reduced pressure of 100 mbar for 10 min and the conversion was calculated by integration ofproduct peaks to a quantified internal standard (nitrobenzene).

As the paragraph descriping shows that 6633-61-0 is playing an increasingly important role.

Reference£º
Article; Roeder, Liesa; Nicholls, Alexander J.; Baxendale, Ian R.; Molecules; vol. 24; 10; (2019);,
Thiazole | C3H3NS – PubChem
Thiazole | chemical compound | Britannica

6633-61-0,6633-61-0, Methyl 2-aminothiazole-5-carboxylate is a thiazole compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

EXAMPLE I Preparation of Methyl 2-chlorothiazole-5-carboxylate To 5.0 g of methyl 2-aminothiazole-5-carboxylate [H. E. Faith, U.S. Pat. No. 2,405,820(1946)] suspended in 54 ml of 6 N hydrochloric acid stirred at-5-0 was added dropwise over 15 minutes 3.7 g of sodium nitrite dissolved in 10 ml of water. After stirring 5 minutes, the brown suspension was added in one portion to a rapidly stirred suspension of 10.6 g of cupric sulfate and 10.6 g of sodium chloride cooled at 5. The cooling bath was removed and stirring was continued for 30 minutes. The pH was adjusted to 7.3 with 6 N sodium hydroxide and the green suspension was filtered through Celite. The solid was washed with three portions of ethyl acetate and the extract was combined with the ethyl acetate extract of the original filtrate. After drying the combined extract over magnesium sulfate, concentration in vacuo gave a brown solid. Trituration with four portions of hot petroleum ether (35-60) served to separate the soluble product from some starting material. Concentration in vacuo of the petroleum ether solution gave 3.9 g. of pure methyl 2-chlorothiazole-5-carboxylate having a melting point of 41-46.

The synthetic route of 6633-61-0 has been constantly updated, and we look forward to future research findings.

Reference£º
Patent; Hoffmann-La Roche Inc.; US4168380; (1979); A;,
Thiazole | C3H3NS – PubChem
Thiazole | chemical compound | Britannica

With the rapid development and complex challenges of chemical substances, new drug synthesis pathways are usually the most effective.6633-61-0,Methyl 2-aminothiazole-5-carboxylate,as a common compound, the synthetic route is as follows.

6633-61-0, To a preheated (50 C.) slurry of copper (II) chloride (932 mg), 10 mL of acetonitrile was added, along with the thiazole aminoester (1 g) and amyl nitrite (737 mg). The mixture was heated at 50 C. for 2 h. The resulting mixture was concentrated and purified by Biotage (5-10% ethyl acetate in hexane) to give the chloride as a brown solid.

As the paragraph descriping shows that 6633-61-0 is playing an increasingly important role.

Reference£º
Patent; Raghavan, Subharekha; Colletti, Steven L.; Ding, Fa-Xiang; Shen, Hong; Tata, James R.; Lins, Ashley Rouse; Smenton, Abigail Lee; Chen, Weichun; Schmidt, Darby Rye; Tria, George Scott; US2006/293364; (2006); A1;,
Thiazole | C3H3NS – PubChem
Thiazole | chemical compound | Britannica