Homework Sourse13 6 points Predict Amax for the UV absorption of each of th
13. [6 points] Predict Amax for the UV absorption of each of the folle compounds. Remember that max for 1,3-butadiene is 217 nm. 14. [6 points] Propose a sequence of reactions to synthesize the following alcohol shown below. Your carbon sources may include acetylene and any alkyl halide with three or fewer carbon atoms OH ![13. [6 points] Predict Amax for the UV absorption of each of the folle compounds. Remember that max for 1,3-butadiene is 217 nm. 14. [6 points] Propose a seque](/WebImages/181/13-6-points-predict-amax-for-the-uv-absorption-of-each-of-th-1972614-1762127458-0.webp "13. [6 points] Predict Amax for the UV absorption of each of the folle compounds. Remember that max for 1,3-butadiene is 217 nm. 14. [6 points] Propose a seque")
Solution
13. base compounds has wavelength 217nm
according to woodward-fieser rules
- has just one alkane substituion which adds 5nm so 217+5= 222nm for first compound
-a ring residue attached to parent dine adds 5nm so the compound has two of these. Hence lamdamax = 217+10= 227nm for second compound
- it has two double bonds extending conjugation. for each 30nm . Hence lamdamax = 217+60= 277nm for third compound
