Stereoselective synthesis of (E)-, (E,Z)- and (E,E)-conjugated dienes via alkylation of 3-sulfolenes as key step was written by Yamada, Sachiko;Ohsawa, Hideto;Suzuki, Takayoshi;Takayama, Hiroaki. And the article was included in Chemistry Letters in 1983.Product Details of 50767-78-7 The following contents are mentioned in the article:
Alkylation of 3-sulfolene in the presence of (Me3Si)2NLi gave 40-65% I [R = Bu, Me, Et, heptyl, isoamyl, (CH2)3CO2CMe3, tetrahydropyranyloxyoctyl (R2), tetrahydropyranyloxyheptyl (R3), CH2Ph, R1 = H]. Alkylation of I (R = Bu, heptyl, R3, R1 = H) gave 55-71% trans–I (R1 = Bu, heptyl, Me) together with 1-9% of the corresponding cis–I. Thermolysis of trans–I in octane gave (E,Z)-R1CH:CHCH:CHR, whereas in EtOH in the presence of base (E,E)-R1CH:CHCH:CHR were obtained quant. Ether cleavage of I (R = R2, R1 = H; R = R3, R1 = Me), followed by thermolysis, gave (E)-CH2:CHCH:CH(CH2)8OAc and (E,E)-MeCH:CHCH:CH(CH2)7OH resp. This study involved multiple reactions and reactants, such as (E)-Dodeca-9,11-dien-1-yl acetate (cas: 50767-78-7Product Details of 50767-78-7).
(E)-Dodeca-9,11-dien-1-yl acetate (cas: 50767-78-7) belongs to esters. Esters are also usually derived from carboxylic acids. It may also be obtained by reaction of acid anhydride or acid halides with alcohols or by the reaction of salts of carboxylic acids with alkyl halides. Acyl chlorides and acid anhydrides alcoholysis is another way to produce esters. Acyl chlorides and acid anhydrides react with alcohols to produce esters. Anydrous conditions are recommended since both acyl chlorides and acid anhydrides react with water.Product Details of 50767-78-7
Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics