Woodward-Fieser's rules for conjugated dienes

After studying a large number of diferent conjugated dienes, Woodward and Fieser came up with an empirical correlation between the structural changes and λmax, that enable us to predict the λmax of an unknown diene. These are called Woodward-Fieser rules. In this lecture, different term involved, Woodward-Fieser rules for dienes and some examples have breen discussed in detail.

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Thank you so much. Though excellent and direct explanation, I still have a lot of questions in my mind.... I guess I have to continue watching and learning this topic....

[@ibrahimislamriad1135]

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[@rubisaini6726]

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[@ChemWis]

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[@ChemWis]

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[@joydoubara8813]

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[@antiscorbutic]

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much ambled sir, its RICHARD FROM UNIVERSITY OF EMBU❤

[@ChemWis]

Keep watching

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[@ChemWis]

Glad you think so!

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[@ChemWis]

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[@skyscrapers3866]

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[@princy1684]

We want this video in alpha,beta carbonyls also

[@rubisaini6726]

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[@birdsworld570]

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[@rubisaini6726]

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[@Priyanka-ek2kd]

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[@ChemWis]

Most welcome

[@Kerry01141]

How to determine ring residue ?? Please

[@mucustica4706]

Bond that are Just attached to the conjugater and extended conjugated system...

[@_nuga]

Just check where you can see double bond and a cut can be made

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[@PabitraRout111]

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[@couragemensah4291]

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[@ChemWis]

Glad it was helpful!

[@ankitpal9499]

It is really a wonderful concise & concept clearing vedio on Woodward fieser

[@ketakikulkarni7363]

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[@ChemWis]

Most welcome!

[@bladearmy4903]

too easy to remember and helpful

[@ambikasajjan4469]

Sir in 2nd example there are alkyl substituents Yes or No Sir

[@Shivu_2004_]

yeah im also confused in it?

[@PMath-Chem_Highschool-Tutor]

Those akyl groups are not part of the conjugation system

[@vanessafelix3183]

For the third example, the alkyl groups were not considered....why??

[@ChemWis]

This is because they are not attached to the conjugated system

[@kenamo649]

you have saved a lot'

[@ChemWis]

Thanks for watching

[@davidjrn8013]

Thank you for your explanation.

[@ChemWis]

You are welcome!

[@mohdaadilshaikh4280]

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[@rubisaini6726]

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[@user-rx3zs5kz9g]

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[@ChemWis]

Glad it was helpful!

[@Kamran-kamboh]

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[@fun-vv3ie]

How to determine ring residue??

[@naseemkaniyath4720]

Informative..

[@eieilannaung4001]

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[@ChemWis]

Welcome

[@DrIsrarAhmad3]

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[@subhmixshorts3231]

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[@theofeutry1843]

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[@ChemWis]

My pleasure!

[@rubisaini6726]

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[@anannaone]

this was so good❤

[@ChemWis]

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This video very helpful me🙏

[@ChemWis]

Glad to hear that

[@singhji439]

Thank you so much Sir !!

[@adityakumarmishra5581]

What if there is Iodine atom added in the system?will there be addition of 5nm or not?

[@94tongetushar9]

Hii sir
Why not double in A is exocyclic to B?

[@martini321]

Thank you for the help

[@joydoubara8813]

Please for a double bond extension, must there be a diene first for you to count the next double bond as an extension?

[@ChemWis]

yes

[@ZaraInteriors24]

Good understanding sir ❤️

[@JayKumar-je9ft]

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[@ChemWis]

Glad you think so!

[@djchemtalk2946]

Nice for quick review

[@thulashikankathirkamanatha4619]

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[@lsgtalk1996]

Best explanation

[@pritykarmakar4937]

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[@leagornik6281]

Why do we consider homoannular base value and not heteroannular? How do you know which one to chose?

[@punjabikitchen8454]

Which have more value then we choose that value...as u know homoannular have more value than heteroannular that's why we prefer homoannular as compared to heteroannular

[@rubisaini6726]

Your question is very right 😊 always should ask this type of this question

[@farahchemist.4418]

Thank u so much

[@ChemWis]

Welcome

[@aarohi765]

🙏🏼thank u sir

[@muhammadnasim6450]

sir kindly review 4:04-7 and is it oky about exocyclic double bonds

[@oladunnioniti1548]

Superb!
Q.E.D 👌

[@ChemWis]

Thanks ✌️

[@muzammilhussain233]

Sir last 3 examples main aap ne alkyl group ki value add ni ki

[@PMath-Chem_Highschool-Tutor]

Those akyl groups are not part of the conjugation system

[@GarimaMall12]

Thankyou so much

[@ChemWis]

Most welcome 😊

[@mintangmulyanto7814]

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[@ChemWis]

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[@sabihturk2154]

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[@zorotenesin6515]

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[@ChemWis]

Welcome

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Wow!
Clinical 🔥

[@mirajulrajrueen875]

Thank you 🥰

[@prajwaldongare9055]

If there is no extending conjunction after diene and one double bond additional present in different ring so can we predict it as 5nm as it is endocyclic in a ring ?

[@rubisaini6726]

Waah waah aapko bhi Sir ka best hi smjj aaya hoga

[@pervezahmad2882]

Good video for UV

[@ChemWis]

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[@kisasimasai5453]

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[@ChemWis]

Thanks

[@taiwedjonwa3972]

Est -ce qu'on peux avoir aussi la video en francais?

[@genius8820]

Mam i did 217 nm in cyclic heteroannular in bsc exam, so it will be wrong? Pls telll

[@140lalitakumari5]

Thanks sir

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[@ChemWis]

Here is the link for the same: th-cam.com/video/u65YQ0KfRoc/w-d-xo.html

[@user-jz5hh8rx1w]

Thank you Sir

[@ChemWis]

Most welcome

[@drtaifal_saydalee2038]

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Sir मेरे पास एक सवाल हे पर में आपको screen shot kese भेजू?

[@yu-uy8zh]

thx

[@hengenavuu4296]

11:51 is that belongs to cyclic triene

[@sahinarakhatun1184]

How to determine Extended conjugation

[@ChemWis]

Any double bond next to conjugate diene is extended conjugation

[@Vibes.mp33]

Easiest explaination

[@marsingh6519]

Thank q sir

[@amanmaan3744]

Why methyl group value is not considered in last 2 examples

[@ahmedoheen8919]

not a substituent of conjugated part

[@prernakumawat8185]

Sir exocyclic double bond wpss smjhao na

[@emanabbasi8343]

it helped...

[@AyeshaKhan-wy3db]

Great

[@hamzanazeer2512]

❤

[@mohamadhanan5706]

you sound like a guy talking in an old movie

[@beautyofscenery972]

Nanometer or micrometer

[@ChemWis]

Nanometer

[@sssshhhh5406]

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[@sssshhhh5406]

hour

[@mohamadhanan5706]

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[@maz7776]

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