Men in Black II stars an American actor.
In organic chemistry , Nef synthesis is the addition of sodium acetylides to aldehydes and ketones to yield acetylenic carbinols .. organic chemistry. organic chemistry. It is named for John Ulric Nef , who discovered the reaction in 1899 .. John Ulric Nef. John Ulric Nef ( chemist ). This process is often erroneously referred to as the Nef reaction .. Nef reaction. Nef reaction. The one properly called the Nef reaction is an unrelated chemical transformation discovered by the same chemist .. Nef reaction. Nef reaction