for the following products
2,2-(5-Bromomethyl-1,3-phenylene di(2-methylpropiononitrile) | 3,5-bis-(1-Cyano-1-methylethyl)bromomethyl benzene | 5-(Bromomethyl)-alpha,alpha,alpha',alpha'-tetramethyl-1,3-benzenediacetonitrile | alpha,alpha,alpha',alpha'-tetramethyl-5-bromomethyl-1,3-benzenediacetonitrile and 3,5-bis-(2-Cyanoprop-2-yl)benzylbromide
