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

Intshayelelo

I-Acid, i-4-bromo-1, i-5-dimethanol-yi-compound ene-chemical formula yi-C7H8BrNO2.

Indalo:

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

2. Indawo yokunyibilika: Indawo enyibilikayo yekhompawundi iphakathi kwe-128-130 ° C.

3. Ukunyibilika: Inyibilika kwezinye izinyibilikisi eziphilayo, ezifana ne-ethanol kunye ne-dichloromethane, kodwa ayinyibiliki emanzini.

Sebenzisa:

I-Acid, i-4-bromo-1,5-dimethyl-inexabiso elithile lesicelo kwi-organic synthesis, kwaye isetyenziselwa ikakhulu ukwakha i-skeleton ye-organic molecules kunye neempendulo zesikhokelo. Ingasetyenziselwa njengendawo ephakathi kwi-synthesis ye-pesticides, amayeza kunye nedayi.

Indlela yokulungiselela:

iasidi, 4-bromo-1,5-dimethyl-inokwenziwa ngala manyathelo alandelayo-:

1. Okokuqala, i-methyl methacrylate kunye ne-aniline ziphendulwa phantsi kwe-catalysis ye-alkali ukulungiselela i-1,5-dimethyl-1H-pyrazole.

2. I-1,5-dimethyl -1H-pyrazole iphendulwa kunye ne-hydrogen bromide phambi kwe-acetic acid ukuvelisa i-4-bromo-1, i-5-dimethyl -1H-pyrazole.

3. Ekugqibeleni, i-4-bromo-1, i-5-dimethyl-1H-pyrazole iphendulwa nge-sodium hydroxide okanye i-sodium carbonate ukuvelisa i-asidi, i-4-bromo-1,5-dimethy-.

Ulwazi ngoKhuseleko:

Ngokuphathelele ukhuseleko lwe-asidi, i-4-bromo-1,5-dimethyl-, le miba ilandelayo kufuneka iqatshelwe:

1. i-compound inokucaphukisa amehlo, ulusu kunye nenkqubo yokuphefumula, nceda ugweme ukudibanisa ngokuthe ngqo.

2. Ngethuba lokusetyenziswa, gwema ukuphefumla uthuli okanye umphunga wesisombululo.

3. Ngexesha lokusebenza kunye nokugcinwa, umoya omhle kunye namanyathelo okukhusela umntu kufuneka athathwe, njengokugqoka iiglasi zokukhusela, iiglavu kunye neempahla ezifanelekileyo zokukhusela.

4. Ukuba udibana nale khompawundi, ngokukhawuleza uhlambe indawo echaphazelekayo ngamanzi amaninzi kwaye udibane neengcebiso zikagqirha wakho.

Olu lwazi lwenzelwe ireferensi kuphela. Nceda ufunde kwaye ulandele ukhuseleko lwedatha yekhemikhali echaphazelekayo phambi kokuba uyisebenzise.