Experiment
This experiment involves a pair of reactions (Figure 1) using the same substrate, 4 /-methoxyacetophenone, and the same reagent, sodium hypochlorite (household bleach). The difference between the reactions is the pH at which they are conducted. When the starting material is heated with bleach (pH 11-12), a haloform reaction (3) oxidatively cleaves a carbon-carbon bond to form 4-methoxybenzoic acid as the product. When the substrate is stirred with acetic acid and bleach (pH 4) at room temperature, electrophilic aromatic substitution (4) occurs to generate 3 0-chloro-4 0-methoxyacetophenone as the product. Although the haloform reaction is precedented in the pedago-gical literature (3d), this experiment differs because it is is-covery-oriented and it includes a new reaction for the teaching lab, aromatic chlorination. The development of this experiment was inspired by a chemoselective bromination of acetophenones conducted without organic solvent (5).
原文感觉有几处错误：3 0-chloro-4 0-methoxyacetophenone，和it is is-covery-oriented
还好，翻译实验起码温习下英语，最痛苦是解答初三化学计算，简单的题要说到他懂却不容易，如果键盘敲了半天，因为百度故障，答案没显示出来，那才真正是无语......
学习是要付出点代价的，互联网不是用来投机的工具。希望你好好考虑一下我的话。有不懂的单词的话开一个金山词霸就行了，为什么要这样呢？实在看不懂的话可以再联系，但希望不是这样的要求翻译大段的文字。
