5) Predict major organic product(s) for the following...

5) Predict major organic product(s) for the following reactions. Please draw the structures of the major organic products and show stereoisomers if formed. (0.5 pts each) a) (2R,3S)-2-bromo-3-methylhexane NaCN / DMSO, 25 °C b) (E)-3-methylhex-3-ene HBr c) (S)-1,4-dimethylcyclohex-1-ene Cl2 / CCl4

Transcript

00:01 Hello students welcome here in this question we have some reactions so the first question first reaction 2 r 3 s 2 bromo 3 methyl hexane is given so this one is reacting with nacn imprints of dmso and 25 degrees celsius so what happens here here now see a necrophiline substitution reaction is taking place.

00:38 So if you see the structure here, br, this one is mixed.

00:51 When it is reacted with this one, sn2 mechanism will happen.

00:56 So cn minus which is present, it will go and attack from backside and it will go outside.

01:03 So nabr will get remand released.

01:06 So here the compound will get br and here it is.

01:14 So this is a product that is produced mainly.

01:20 And the second reaction here is b.

01:26 E 3 methyl hex -3 -in is reacting with hbr.

01:39 What happens here? this is addition reaction.

01:42 So as addition reaction we can see here the structure of this one, e compound, so methyl group.

01:55 So this is the compound e compound.

01:58 So what happens then hbr is produced? hbr is taken.

02:02 So the secondary, both are secondary carbocadian.

02:05 So this is a more stable one.

02:07 So because it is tertiary carbogadian and this one is secondary carbocadian and this one is secondary carbokadian will produce.

02:12 So that's right.

02:13 The compound it is produced here.

02:20 So here it is h and here it is h...

Question

5) Predict major organic product(s) for the following reactions. Please draw the structures of the major organic products and show stereoisomers if formed. (0.5 pts each) a) (2R,3S)-2-bromo-3-methylhexane NaCN / DMSO, 25 °C b) (E)-3-methylhex-3-ene HBr c) (S)-1,4-dimethylcyclohex-1-ene Cl2 / CCl4

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