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

未反应的四氢呋喃经适当可以回收循环使用。

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环戊溴和19.4镁在空者四氢呋喃加入环戊格林尼亚试剂作发生反应。