摘要
以Baylis-Hillman加成物为起始原料,经过氢溴酸溴代,得到溴代物2,再与2-萘酚反应得到醚化物3;首次报道利用Pd(OAc)2/Cu(OTf)2复合催化剂催化醚化物3的环化反应,得到4个3,4-二氢香豆素类衍生物(4a^4d),并通过1H NMR和MS进行表征。
Aryl allyl ethers(3) were synthesized by bromation and esterization of Baylis-Hillman adducts(1).Four 3,4-dihydrocoumarin derivatives were obtained by cyclization of aryl allyl ethers(3) in the presence of Pd(OAc)2/Cu(OTf)2.The structures were confirmed by 1H-NMR and MS.
出处
《浙江化工》
CAS
2012年第1期22-24,共3页
Zhejiang Chemical Industry