新乡市露地费菜高产优质栽培技术

费菜又名景天三七、养心菜、高钙菜、土三七等,是景天科景天属多年生宿根草本植物。茎自根基处簇生、直立;叶肥厚互生,叶色翠绿,叶状呈披针形或倒披针形,在叶的中部以下呈锯齿状;株高一般15~40 cm;聚伞花序,花瓣黄色,每年6-7月开花,8-9月结果。费菜含有糖类、生物碱类、黄酮类等化学成分,亦含蛋白质、维生素、钙、磷、铁、胡萝卜素等物质。费菜喜光照、耐旱,对土壤要求不严,有较强的适应性、抗逆性,集食用、药用、观赏于一体,有较高的经济效益。

Co(Ⅲ)/Zn(Ⅱ)-catalyzed dearomatization of indoles and coupling with carbenes from ene-yne ketones via intramolecular cyclopropanation

A straightforward and efficient protocol for dearomatizing indoles is described.The reaction,catalyzed by an inexpensive Co(III)/Zn(II)catalyst,starts from easily accessible N‐pyrimidinyl indoles and ene‐yne ketones.Mild reaction conditions,high diastereoselectivity,a broad substrate scope,effective functional group tolerance,and reasonable to remarkable yields were observed.