The anhydrous NdCl_a-LiNp (LiNp=Lithium uaphthalide) system has been fouudto cause a novel cyclodimerization of α, β-unsaturated ketoues to give cycio--pentau
the catalytic activity of the polymer-bound palladium tetrakis (p-hydroxylphenyl) porphyrin complex (P-THPP-Pd) has been studied. It is found that the polymer catal
Two new ceramides,Nephtixamide A and B,were isolated from thesoft coral Nephthea tixierae verseveldt.Their structures were established byspectroscopic methods
Aliphatic α-oxo ketene cyclic dithioacetals 1 were reacted with allyl magne-sium bromide to afford the 1,2-addition products 2.Catalyzed by boron trifluorideet
A new reagent,1(4 antipyriny1) 3(2,4-dinitropheny1)triazene(APDNBT), was synthesized in this lab and its analytical properties and its colour reaction with cadm
This letter presents ab initio calculation of Captodative effect on 2,2,2-trifluoroethylamine free radical on STO-3G level. The △Ecd is -50. 15 kJ/mol, which m