sodium tetrahydroborate

2: NaBH4 View Scheme

2: NaBH4 View Scheme

2,2'-azo-bisisobutyronitrile; TMG; tri-n-butyl-tin hydride 1) MeCN, 15h, room temperature 2) benzene, 3h, reflux; Yield given. Multistep reaction. Yields of byproduct given;