1-（4-Acetylaminophenyl）-α-bromo-1-propanone was synthesized from 1-（4-acetylaminophenyl） propanone through α-hydrogen brominating using Br2 in ethanol as bromination agent,and the yield was 70.4%.The melting poi...1-（4-Acetylaminophenyl）-α-bromo-1-propanone was synthesized from 1-（4-acetylaminophenyl） propanone through α-hydrogen brominating using Br2 in ethanol as bromination agent,and the yield was 70.4%.The melting point of the target compound was tested and the structure was confirrmed by FT-IR and MS.The route with little pollution and less loss of solvent is practically valuable.展开更多
INTRODUCTION Nitrogen is a key component of soil organic matter. Only when we have succeeded in characterizing the major part of organic N-containing compounds will we be able to understand fully the transformation re...INTRODUCTION Nitrogen is a key component of soil organic matter. Only when we have succeeded in characterizing the major part of organic N-containing compounds will we be able to understand fully the transformation reactions in the soil and to use soil-N more efficiently. However, only about 1/ 4——1/ 2 of the total N in humic acid (HA), one of the major constituents of soil organic matter, can be accounted for as amino acids and amino sugars, and most of the remainder has still to be accounted for. It has been展开更多
文摘1-（4-Acetylaminophenyl）-α-bromo-1-propanone was synthesized from 1-（4-acetylaminophenyl） propanone through α-hydrogen brominating using Br2 in ethanol as bromination agent,and the yield was 70.4%.The melting point of the target compound was tested and the structure was confirrmed by FT-IR and MS.The route with little pollution and less loss of solvent is practically valuable.
基金Project supported by the National Natural Science Foundation of China.
文摘INTRODUCTION Nitrogen is a key component of soil organic matter. Only when we have succeeded in characterizing the major part of organic N-containing compounds will we be able to understand fully the transformation reactions in the soil and to use soil-N more efficiently. However, only about 1/ 4——1/ 2 of the total N in humic acid (HA), one of the major constituents of soil organic matter, can be accounted for as amino acids and amino sugars, and most of the remainder has still to be accounted for. It has been
