Son compuestos orgánicos considerados derivados de la pérdida de una molécula de agua entre dos moléculas de ácido carboxílico, o aquellos que se originan a través de una molécula de un diácido. La fórmula general de este tipo de compuestos es la siguiente: (RCO)2O, donde R puede ser cualquier grupo alquilo o en algunos casos también puede ser un grupo arilo (Ar).
Clasificación de los anhídridos de ácidos
Anhídridos de ácidos simétricos. Son aquellos anhídridos donde los grupos alquilos (R) o arilos (Ar) son iguales. Por ejemplo:
Anhídridos de ácidos asimétricos. Estos anhídridos presentan grupos alquilos (R) o arilos (Ar) diferentes. Por ejemplo:
¿cómo se obtienen los anhídridos de ácidos?
Los anhídridos de ácidos se obtienen a través de la reacción de dos ácidos carboxílicos, según la ecuación general:
R-COOH + R-COOH → R-CO-O-CO-R + H2O
También se pueden obtener cuando se hace reaccionar un haluro de acilo con una sal de ácido carboxílico, como se muestra a continuación:
RCOX + R’COONa → RCO-O-COR’ + NaX
Otra forma de obtener anhídridos de ácido, es mediante deshidratación térmica de algún ácido carboxílico y así tener como resultado un anhídrido de ácido cíclico, como se muestra a continuación:
nomenclatura
De forma general, los anhídridos se nombran igual que el ácido de partida, cambiando la palabra ácido por anhídrido.
nomenclatura iupac
Para nombrar los anhídridos bajo este sistema, se debe tomar en cuenta si el anhídrido es simétrico o asimétrico.
-
Los anhídridos asimétricos (r≠r’) se nombran usando la siguiente fórmula:
Anhídrido alcanoico alcanoico
-
Los anhídridos simétricos (r=r’)se nombran usando la siguiente fórmula:
Anhídrido alcanoico
nomenclatura común
Al igual que en el sistema IUPAC, se debe tomar en cuenta el tipo de anhídrido que se va a nombrar. Además de que por este sistema se debe colocar el nombre de los ácidos carboxílicos del cual derivan.
-
Los anhídridos asimétricos (r≠r’) se nombran usando la siguiente fórmula:
Anhídrido carboxílico carboxílico
-
Los anhídridos simétricos (r=r’)se nombran usando la siguiente fórmula:
Anhídrido carboxílico
ejercicios
IUPAC: Anhídrido pentanoico butanoico
Común: Anhídrido valérico butírico
IUPAC: Anhídrido propanoico
Común: Anhídrido propiónico
IUPAC: Anhídrido etanodioico
Común: Anhídrido oxálico
What’s Going down i am new to this, I stumbled upon this I’ve discovered It positively useful and it has helped me out loads. I am hoping to give a contribution & help different users like its aided me. Great job.
Sweet internet site, super layout, very clean and utilize friendly.
Monitor phone from anywhere and see what’s happening on target phone. You will be able to monitor and store call logs, messages, social activities , images , videos, whatsapp and more. Real-time monitoring of phones, No technical knowledge is required, no root is required.
Your posts always make me feel like I’m not alone in my struggles and insecurities Thank you for sharing your own experiences and making me feel understood
Good content but i prefer xxx games to masturbate. I came 2 times while playing Fappersplay today
Hi there, i read your blog occasionally and i own a similar one and i was just curious if you get a lot of spam remarks? If so how do you reduce it, any plugin or anything you can recommend? I get so much lately it’s driving me crazy so any help is very much appreciated.
Please let me know if you’re looking for a writer for your site. You have some really good articles and I believe I would be a good asset. If you ever want to take some of the load off, I’d love to write some content for your blog in exchange for a link back to mine. Please blast me an email if interested. Thanks!
I view something really interesting about your site so I saved to favorites.
You are truly a good webmaster. This web site loading speed is amazing.
It seems that you’re doing any unique trick.
Also, the contents are masterpiece. you’ve done a wonderful activity in this subject!
Similar here: https://corado.shop and also here:
Bezpieczne zakupy
Hey, you used to write magnificent, but the last few posts have been kinda boring… I miss your tremendous writings. Past few posts are just a little bit out of track! come on!
I do not even know how I ended up here, but I thought this post was good. I do not know who you are but certainly you’re going to a famous blogger if you aren’t already 😉 Cheers!
qiyezp.com
Hongzhi 황제는 모두 미소를지었습니다. «Qing 가족은 열심히 일했습니다. 서둘러 따뜻한 정자에서하십시오.»
Hi, Neat post. There’s a problem with your website in web explorer, might check thisK IE still is the market leader and a huge portion of other people will miss your great writing due to this problem.
Hello! I just wanted to ask if you ever have any issues with hackers?
My last blog (wordpress) was hacked and I ended up losing many months of hard work due to no back up.
Do you have any solutions to protect against hackers?
my homepage; vpn special code
Hello there, I discovered your web site by way of Google at the same time
as looking for a comparable subject, your website came up,
it seems to be great. I’ve bookmarked it in my google bookmarks.
Hi there, simply changed into aware of your weblog via Google, and
found that it’s really informative. I’m going to watch out for brussels.
I’ll be grateful if you continue this in future.
Many other folks can be benefited out of your writing.
Cheers!
Check out my web blog … vpn coupon 2024
What’s Happening i’m new to this, I stumbled upon this I’ve found It positively useful and it has aided me out loads. I hope to contribute & aid other users like its helped me. Great job.
What Is Puravive? Puravive is a weight loss supplement that works to treat obesity by speeding up metabolism and fat-burning naturally.
Hi there just wanted to give you a brief heads up and let you know a few of the images aren’t loading correctly. I’m not sure why but I think its a linking issue. I’ve tried it in two different web browsers and both show the same outcome.
I am very happy to read this. This is the type of manual that needs to be given and not the random misinformation that’s at the other blogs. Appreciate your sharing this greatest doc.
Yay google is my world beater aided me to find this great internet site! .
I truly enjoy reading through on this web site, it contains excellent blog posts.
Excellent web site. Lots of helpful information here. I?¦m sending it to several buddies ans additionally sharing in delicious. And of course, thank you in your sweat!
Hi, i think that i saw you visited my site so i came to “return the favor”.I am attempting to find things to enhance my site!I suppose its ok to use a few of your ideas!!
I don’t even know how I ended up here, but I thought this post was great. I do not know who you are but certainly you are going to a famous blogger if you aren’t already 😉 Cheers!