无机化学绪论-无机化学-中国科技大学-00.pdf
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绪 论 Introduction
我的宗旨:
To our students, whose enthusiasm and curiosity have often inspired us, and
whose questions and suggestions have sometimes taught us.
一、Chemistry ── the Central Science
Chemistry has often been called the central science, because a basic knowledge of chemistry is
essential for the study of biology, physics, geology, ecology and many other subjects.
1 .二十世纪,特别是二十世纪后期,化学有了突飞猛进的发展。
(1) 冠醚(crown ether )的发现(The discovery of crown ether ):
第一个冠醚的发现纯属偶然。工业化学家(杜邦公司)C. J. Pedersen 要从一种单基保
护邻苯二酚(1)与二氯二乙醚(2 )制备双苯酚(3 ):
OH
OH HO
Cl Cl
+ (邻羟基苯氧基
O
O O O O -乙基醚)
(1) (2)
O
(3)
当用了稍微不纯的化合物(1)(含有一些未经保护的酚) ,还得到了非常少的(0.4% )六醚(4)
O O O
(二苯并(18)冠醚-6 )
O O O
(4 )
KMnO4 可溶于其中,呈紫红色,他又合成了
O O
O O
O O O O O
O O
O 12 O 15 21 24
O O O O
O O O
O
O O O
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