B 1922 ( OTTOKEMI ) sec-Butylmagnesium chloride solution , 2.0 M in diethyl ether CAS-15366-08-2 i used in chemical research t can be used inMetal catalyzed cross-coupling reactions with non-activated aryl chlorides.The synthesis of various alkoxytrichlorosilanes by reacting with tetrachlorosilane and alcohols.