Bulletin of the Chemical Society of Japan p. 3456 - 3459 (1981)
Update date:2022-08-11
Topics:
Satoh, Shohei
Suginome, Hiroshi
Tokuda, Masao
Electrolysis of allyl halides and diethyl fumarate (2) in N,N-dimethylformamide containing 0.2 M tetraethylammonium tosylate gave a conjugate addition product, ethyl 3-(ethoxycarbonyl)-5-hexenoate, in a moderate yield.The electrochemical reaction of 1-chloro-3-methyl-2-butene (4) with 2, that of allyl chloride 4 with methyl crotonate (6), and that of methyl 4-halo-2-butenoate with 2 likewise gave the corresponding conjugate addition products, ethyl 3-(ethoxycarbonyl)-6-methyl-5-heptenoate, methyl 3,4,4-trimethyl-5-hexenoate, and ethyl 3-(ethoxycarbonyl)-4-(methoxycarbonyl)-5-hexenoate, respectively.The addition reaction of 4 to 2 takes place at the α-carbon terminus of 4 exclusively, whereas the addition of 4 to 6 at the γ-carbon terminus of 4 .These regioselectivities of the additions and pathways of the reactions are discussed.
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