Ethylaluminium Dichloride Induced Reactions of Acetals with Unsaturated Carboxylic Esters: Synthesis of Homoallyl Ethers
作者:Jürgen O. Metzger、Ursula Biermann
DOI:10.1002/jlac.199619961119
日期:1996.11
The ethylaluminium dichloride induced reactions of methyl 10-undecenoate (1) with dimethyl acetals of formaldehyde 2a, acetaldehyde 2b, isobutyraldehyde 2c, and pivaldehyde 2d gave the corresponding homoallyl ethers 3a, 3b, 3c, and 3d in yields of 48–70%. The products were obtained as mixtures of the (E) and (Z) stereoisomers. With formaldehyde dimethyl acetal (2a), methyl oleate (6), and methyl petroselinate
二氯化乙基铝诱导的10-十一碳烯酸甲酯(1)与甲醛2a,乙醛2b,异丁醛2c和苯甲醛2d的二甲基乙缩醛反应,得到相应的均烯丙基醚3a,3b,3c和3d,产率为48-70%。得到的产物为(E)和(Z)立体异构体的混合物。用甲醛二甲基乙缩醛(2a),油酸甲酯(6)和petroselinate甲酯(11)得到相应的区域异构体(E)-构型的均烯丙基醚7/8和12/13。