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

Isingeniso

I-Acid, 4-bromo-1, 5-dimethanol-iyinhlanganisela ifomula yayo yamakhemikhali ithi C7H8BrNO2.

Imvelo:

1. Ukubukeka: i-asidi, i-4-bromo-1,5-dimethyl-white solid.

2. Iphuzu lokuncibilika: Indawo encibilikayo yenhlanganisela iphakathi kuka-128-130°C.

3. Ukunyibilika: Iyancibilika kwezinye izinyibilikisi zemvelo, njenge-ethanol ne-dichloromethane, kodwa ayincibiliki emanzini.

Sebenzisa:

I-Acid, 4-bromo-1,5-dimethyl-inenani elithile lohlelo lokusebenza ku-organic synthesis, futhi isetshenziselwa kakhulu ukwakha uhlaka lwamathambo ama-molecule ephilayo kanye nokusabela komhlahlandlela. Ingasetshenziswa njengendawo ephakathi yokuhlanganiswa kwezibulala-zinambuzane, imithi kanye nodayi.

Indlela Yokulungiselela:

i-asidi, i-4-bromo-1,5-dimethyl-ingahlanganiswa ngezinyathelo ezilandelayo-:

1. Okokuqala, i-methyl methacrylate ne-aniline isabela ngaphansi kwe-catalysis ye-alkali ukulungiselela i-1,5-dimethyl-1H-pyrazole.

2. I-1,5-dimethyl -1H-pyrazole isabela nge-hydrogen bromide phambi kwe-acetic acid ukukhiqiza i-4-bromo-1, i-5-dimethyl -1H-pyrazole.

3. Ekugcineni, i-4-bromo-1, i-5-dimethyl-1H-pyrazole isabela nge-sodium hydroxide noma i-sodium carbonate ukuze ikhiqize i-asidi, i-4-bromo-1,5-dimethy-.

Ulwazi Lokuphepha:

Mayelana nokuphepha kwe-asidi, i-4-bromo-1,5-dimethyl-, lezi zindaba ezilandelayo zidinga ukuqashelwa:

1. i-compound ingase icasule amehlo, isikhumba kanye nesistimu yokuphefumula, sicela ugweme ukuthintana ngqo.

2. Ngesikhathi sokusebenzisa, gwema ukuhogela uthuli noma umhwamuko wesixazululo.

3. Ngesikhathi sokusebenza nokugcinwa, kufanele kuthathwe umoya omuhle kanye nezinyathelo zokuzivikela, njengokugqoka izibuko zokuzivikela, amagilavu ​​nezingubo zokuzivikela ezifanele.

4. Uma uhlangana nalesi sithako, shayela ngokushesha indawo ethintekile ngamanzi amaningi futhi uthintane neseluleko sikadokotela wakho.

Lolu lwazi luyireferensi kuphela. Sicela ufunde futhi ulandele ishidi ledatha yezokuphepha yekhemikhali efanelekile ngaphambi kokuyisebenzisa.