作者:Takeshi Hata、Satoshi Iwata、Shumpei Seto、Hirokazu Urabe
DOI:10.1002/adsc.201100995
日期:2012.7.9
Treatment of 2‐alken‐4‐ynoates with methyl‐ or aryl‐Grignard reagents and iron(II) chloride (10 mol%) afforded 5‐methyl‐ or 5‐aryl‐3,4‐alkadienoates in good yields as a single isomer after aqueous work‐up. Likewise, (2‐alken‐4‐ynoyl)oxazolidinones afforded (5‐methyl‐3,4‐alkadienoyl)oxazolidinones. The aldol‐type reaction with acetone was also possible in place of the hydrolytic work‐up.
用甲基或芳基格氏试剂和氯化亚铁(II)(10 mol%)处理2烯丙基4酸酯可得到5甲基或5芳基3,4链烷二烯酸酯,单一异构体收率高水处理后。同样,(2-烯丙基-4-炔丙基)恶唑烷酮可提供(5-甲基-3,4-烷二烯酰基)恶唑烷酮。与丙酮的醛醇缩合反应也可以代替水解后处理。