3- Chloro-l-pentene

Problem 6.6 Write structural formulas for (a) ( )-2-methyl-3-hexene trans), b) (S)-3-chloro-l-pentene, (c) (R),(Z)-2-chloro-3-heptene (c/s). 

C5H9CI 3-chloro-l-pentene 24356-00-1 366.15 31.187 1,2 5118 C5H9F 2-fluoro-trans-2-pentene 66213-88-5 317.11 267 2... 

Another type of reaction which has been realized with the allyl system is the so-called Sn2 displacement. Here the attacking reagent strikes an atom different from the one to which the halogen atom is attached. An allylic shift occurs, and the halogen atom is displaced. Thus, when 3-chloro-l-pentene (XVI) is allowed to react with sodiomalonic ester, 2-pentenyl malonic ester is obtained (XVII).19 Second-order kinetics... 

Chloro-l-pentene was treated with phenoxide ion as shown for l-chloro-2-pentene in the preceding equation. Two C11H14O constitutional isomers were obtained. Suggest a reasonable structure for each isomer. 

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