H-Pyrazole-3-carboxylic acid 4-bromo-1 5-dimethyl- (CAS # 5775-91-7)

Taw qhia

Acid, 4-bromo-1, 5-dimethanol-yog cov tshuaj uas nws cov tshuaj formula C7H8BrNO2.

Xwm:

1. Cov tsos mob: acid, 4-bromo-1,5-dimethyl-dawb khoom.

2. Melting point: Lub melting point ntawm cov compound yog nyob nruab nrab ntawm 128-130 ° C.

3. Solubility: Nws yog soluble hauv qee cov organic solvents, xws li ethanol thiab dichloromethane, tab sis insoluble hauv dej.

Siv:

Acid, 4-bromo-1,5-dimethyl-muaj qee yam kev siv tus nqi hauv cov organic synthesis, thiab feem ntau yog siv los tsim cov pob txha ntawm cov organic molecules thiab qhia cov kev cuam tshuam. Nws tuaj yeem siv los ua ib qho nruab nrab rau kev sib txuas ntawm cov tshuaj tua kab, tshuaj thiab dyes.

Txoj Kev Npaj:

acid, 4-bromo-1,5-dimethyl- tuaj yeem ua ke los ntawm cov kauj ruam hauv qab no-:

1. Ua ntej, methyl methacrylate thiab aniline reacted nyob rau hauv lub catalysis ntawm alkali los npaj 1,5-dimethyl-1H-pyrazole.

2. 1,5-dimethyl -1H-pyrazole yog reacted nrog hydrogen bromide nyob rau hauv lub xub ntiag ntawm acetic acid los tsim 4-bromo-1, 5-dimethyl -1H-pyrazole.

3. Thaum kawg, 4-bromo-1, 5-dimethyl-1H-pyrazole yog reacted nrog sodium hydroxide los yog sodium carbonate los tsim cov kua qaub, 4-bromo-1,5-dimethy-.

Cov ntaub ntawv kev nyab xeeb:

Hais txog kev nyab xeeb ntawm cov kua qaub, 4-bromo-1,5-dimethyl-, cov teeb meem hauv qab no yuav tsum tau sau tseg:

1. Cov khoom xyaw yuav ua rau lub qhov muag, tawv nqaij thiab ua pa, thov tsis txhob sib cuag ncaj qha.

2. Thaum siv, tsis txhob nqus cov plua plav lossis vapor ntawm cov tshuaj.

3. Thaum lub sijhawm ua haujlwm thiab khaws cia, yuav tsum ua kom muaj cua zoo thiab tiv thaiv tus kheej, xws li hnav tsom iav, hnab looj tes thiab khaub ncaws tiv thaiv tsim nyog.

4. Yog tias koj tau ntsib nrog cov tshuaj no, tam sim ntawd yaug qhov chaw cuam tshuam nrog dej txaus thiab sab laj koj tus kws kho mob cov lus qhia.

Cov ntaub ntawv no tsuas yog siv rau kev siv xwb. Thov nyeem thiab ua raws li cov ntaub ntawv kev nyab xeeb ntawm cov tshuaj muaj feem xyuam ua ntej siv.