Question Of the Day - 25-02-09 Biggie in organic

21

tapanmast Vora ·2009-02-25 10:27:48

(CHO-CHO) = R

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39

Dr.House ·2009-02-25 10:29:15

kya hain woh? konsa waale ka?

sorry maine upar wala double bond R samja, sorry

itne gusse kyun hote hon? sorry again

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21

tapanmast Vora ·2009-02-25 11:20:34

NAHI NAHI JUS MAZAK DUDE!!!

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33

Abhishek Priyam ·2009-02-25 20:10:38

J K L R are right..

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21

tapanmast Vora ·2009-02-25 20:22:44

not sure ? : Is S = CH2OH-COONa

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33

Abhishek Priyam ·2009-02-25 20:24:46

:(

sodium alcohol reduces..so how -COONa

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21

tapanmast Vora ·2009-02-25 20:28:00

oh k k... iska matlab CH2OH-CHO......

hmmm. so the next prod on Tollen's test gives CH2OH-COOH rite....

then HVZ to give CHBrOH-COOH

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33

Abhishek Priyam ·2009-02-25 20:34:51

before HVZ and (T)
red P HI is also addded(1eq)

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33

Abhishek Priyam ·2009-02-25 20:37:00

and in HVZ Br₂ is in excess so BrCH₂-COBr will be formed

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21

tapanmast Vora ·2009-02-25 21:31:39

oh yah!!! dat p/HI wud reduce -OH to H and then HVZ... true true....

lemme try ahead... aage lagta hai kuch Claisen hone wala hai....

BUT I had a DBT DUDE : In HVZ if its excess then first all the Î±-H are substituted by Br, then only wud the H of carboxylic acid be replaced,........ WAT SAY?

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21

tapanmast Vora ·2009-02-25 21:38:59

SO MY ANS FOR Z WUD (Br)3C-COOBr

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21

tapanmast Vora ·2009-02-25 21:43:00

U = CH3COOC2H5

fir CLAISEn KAKA....

matlab

V = CH3COCH2COOC2H5.....

fir firse CLAISEN....

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21

tapanmast Vora ·2009-02-25 21:49:23

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21

tapanmast Vora ·2009-02-25 21:50:33

(CH3)-(CH2)-COOH = Y

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33

Abhishek Priyam ·2009-02-26 02:38:40

rest U V Y Z O P Q are correct..

u are right about excess HVZ...

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33

Abhishek Priyam ·2009-02-26 02:42:58

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21

tapanmast Vora ·2009-02-26 02:45:52

HEY!

Y is the product formed after arndt eistert reaction of CH3-COOH then shud it not b propanoic acid as i sadi?? [7]

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33

Abhishek Priyam ·2009-02-26 02:54:15

Oh.. in question thers Ag₂O moist also i din sae that... yeah Y is also right...

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33

Abhishek Priyam ·2009-02-26 02:55:33

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21

tapanmast Vora ·2009-02-26 02:57:25

yah I know I havnt touchd upon the product I.... still thinkin [12]

It feels like pentanoic acid or sumthin but the reaction sequence doesnt suite it...

lemme [12]

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21

tapanmast Vora ·2009-02-26 03:02:16

dude,
wats the eq. of H2 used in converting M to N ?? [7]

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33

Abhishek Priyam ·2009-02-26 03:03:24

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33

Abhishek Priyam ·2009-02-26 03:04:34

M->N excess H₂/Ni

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33

Abhishek Priyam ·2009-02-26 03:08:33

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21

tapanmast Vora ·2009-02-26 03:10:20

This will be the intermediate after intermol. claisen enroute frm V to W :
CH3-CO-CH2-CO-CH2-CO-OC2H5

Then on reaction with dat dibromoo comp. ??? mayb cyclisation (WILD GUESS = BLUFF) [3]

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33

Abhishek Priyam ·2009-02-26 03:11:32

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

These are the answers done here.. rest are not solved...

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
W X and I M N...

so try these

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33

Abhishek Priyam ·2009-02-26 03:12:37

W is wrong... :(

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21

tapanmast Vora ·2009-02-26 03:23:53

No DUDE I havnt givn my ans for W....

Wat i hav shown is da likely intermediate via intermol. claisen is all wat i hav said

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33

Abhishek Priyam ·2009-02-26 03:25:44

kk...

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21

tapanmast Vora ·2009-02-27 07:52:55

priyam : is I pentanoic/butanoic acid or wat?

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