心气虚,则脉细;肺气虚,则皮寒;肝气虚,则气少;肾气虚,则泄利前后;脾气虚,则饮食不入。
醛或酮与a-卤代酸酯和锌在惰性溶剂中反应,经水解后得到b-羟基酸酯。首先是a-卤代酸酯和锌反应生成中间体有机锌试剂,然后有机锌试剂与醛酮的羰基进行加成,再水解:[1]S.Reformatskii, Ber.,1887, 20,1210; J.Russ.Phys.Chem.Soc.,1890, 22,44.[2]R.L.Shriner, OrganicReactions I,NewYork,1942,pI.[3]H.E.ZimmermanandM.D.Traxler, J.Amer.Chem.Soc.,1957, 79,1920.[4]L.H.Klemm,G.M.Bauer, J.Org.Chem.,1958, 23,344.[5]D.G.M.Draper,A.Kuksis, Che ...