Puas yog cov tshuaj aspirin puas muaj cov cawv ua haujlwm?

2024 Tus sau: Stanley Ellington | [email protected]. Kawg hloov kho: 2023-12-16 00:17

acetylsalicylic acid, tam sim no hu ua tshuaj aspirin thiab yog qhia hauv qab no (sab laug), nyob ib sab ntawm cov qauv rau salicylic acid (center). Nco ntsoov tias salicylic acid muaj ib qho organic acid pab pawg ua haujlwm ,a ib cawv pawg , ntawm ib lub nplhaib uas muaj ntxhiab hydrocarbon.

Tib neeg kuj nug tias, pab pawg ua haujlwm dab tsi Puas muaj tshuaj aspirin?

Muaj peb pawg ua haujlwm pom muaj nyob hauv cov tshuaj aspirin:

• Carboxylic acid muaj cov pab pawg carbonyl (CO) thiab pab pawg hydroxyl (OH). Nws tseem hu ua pawg R-COOH.
• Ester muaj cov pab pawg carbonyl (CO) khi rau cov pa oxygen.
• Cov tshuaj tsw qab (benzene) yog lub nplhaib uas koj pom hauv cov tshuaj aspirin.

Ib yam nkaus, pab pawg twg ua haujlwm tau pom hauv tshuaj aspirin uas tsis pom hauv salicylic acid? Cov qauv zoo sib xws. Lawv ob leeg muaj lub nplhaib benzene nqa ob pawg, ntawm cov pa roj carbon atoms uas nyob ib sab. Nyob rau hauv ob qho tib si ntawm lawv ib pawg yog ib carboxylic acid pab pawg Tab sis, salicylic acid nqa ib pawg phenol thaum cov tshuaj aspirin tsis.

Dab tsi ua haujlwm pab pawg muaj nyob hauv cov tshuaj aspirin thiab salicylic acid?

Aspirin (acetylsalicylic acid) yog cov tshuaj tsw qab uas muaj ob qho tib si carboxylic acid functional pab pawg thiab ib ester pab pawg ua haujlwm. Aspirin yog ib qho tsis muaj zog acid uas tsuas yog me ntsis soluble hauv dej. Aspirin tuaj yeem npaj tau los ntawm kev ua haujlwm ntawm salicylic acid thiab acetic anhydride nyob rau hauv muaj cov kua qaub catalyst.

Dab tsi yog ob pawg ua haujlwm muaj nyob hauv salicylic acid?

Salicylic acid (2-hydroxybenzoic acid) yog tsim los ntawm lub nplhaib benzene uas yog 2 pab pawg nyob sib ze, carboxylic pawg thiab hydroxy pawg, txuas nrog. Peb ib txwm tsis xav txog benzene los ua pawg ua haujlwm, yog li ntawd yog vim li cas hydroxyl thiab carboxylic yog cov suav.