The average molecular weight of polyoxytetramethylene glycol could be flexibly controlled by varying the...

未的四氢呋喃经适当处理后可以回收循使用。

119.0 g of cyclopentyl bromide and 19.4 g of magnesium are reacted in ether or THF to give a cyclopentyl Grignard reagent.

119溴和19.4镁在空气中或者四氢呋喃中加入林尼亚试剂作发生。