臺灣博碩士論文加值系統

本論文分為兩部份:
第一部份詳述了由格林鈉試劑所製備的有機鎂銅試劑,與光氣取代物--
S,S-二甲基二硫代碳酸酯(DMDTC)進行取代反應,而得到雙取代的酮類產物,
甚至得到單取代的硫酯類產物的方法.
第二部份則對於以溴化鎂作為路易士酸,促進格林鈉試劑與縮醛(酮)取
代基進行分子內環合反應,可以得到三,四和五員環的產物做了初步的探討.

This thesis contains twe parts:
In the first part we discuss the substitution reactions of organomagnesium
copper reagents, which were prepaired from Grignard reagents, and the loaner
of phosgene, S,S-dimethtldithiocarbonate (DMDTC). We can obtain the disubsti-
tuted ketones, even monosubstituted thioesters as products.
In the second parts we found that magnesium bromide promoted
intramolecular cyclization reactions of Grignard reagents and acetals. By
using this method, we can easily get the products which contain 3, 4 or 5
memberd rings.