- Joined
- Apr 13, 2015
- Messages
- 170
- Reaction score
- 46
Question number 1)
Number 72. ) I have read that Aldo condensations can undergo spontaneous dehydration Even when heat is not listed as a next step. Aldos can dehydrate under acidic, basic, or thermal (heat) ......So I picked answer E , the conjugated , dehydrated more stable form as the Major product----------But the answer chosen as correct was D, the hydrated form.
Question number 2)
Also I know for b-dicarbonyl, the middle Carbon is the most Acidic..... But what about for this : http://wtt-pro.nist.gov/wtt-pro/image.png?cmp=2-pentanone
Which alpha carbon is the most acidic ? the carbon to the outter left of the carbonyl or the carbon in the middle ?
Question number 3)
- Even though I got number 95 correct on the Organic DAT Destroyer pg. 31 , -----> I know that the NBS removes off a benzylic hydrogen and replaces it with a BR but what if we had this :
https://s31.postimg.org/xwpi1b8bv/question_1.png
Would the BR attach to the first available benzylic hydrogen OR would it prefer the tertiary position even though its not the first hydrogen closest to the benzene ?
Number 72. ) I have read that Aldo condensations can undergo spontaneous dehydration Even when heat is not listed as a next step. Aldos can dehydrate under acidic, basic, or thermal (heat) ......So I picked answer E , the conjugated , dehydrated more stable form as the Major product----------But the answer chosen as correct was D, the hydrated form.
Question number 2)
Also I know for b-dicarbonyl, the middle Carbon is the most Acidic..... But what about for this : http://wtt-pro.nist.gov/wtt-pro/image.png?cmp=2-pentanone
Which alpha carbon is the most acidic ? the carbon to the outter left of the carbonyl or the carbon in the middle ?
Question number 3)
- Even though I got number 95 correct on the Organic DAT Destroyer pg. 31 , -----> I know that the NBS removes off a benzylic hydrogen and replaces it with a BR but what if we had this :
https://s31.postimg.org/xwpi1b8bv/question_1.png
Would the BR attach to the first available benzylic hydrogen OR would it prefer the tertiary position even though its not the first hydrogen closest to the benzene ?
