Nitrogen → 4,4'-Tolan-dicarboxylic acid di-tert.-butyl ester

Reaction equation

[C:1]([O:5][C:6](=[O:14])[C:7]1[CH:12]=[CH:11][C:10](Br)=[CH:9][CH:8]=1)([CH3:4])([CH3:3])[CH3:2].C1(P(C2C=CC=CC=2)C2C=CC=CC=2)C=CC=CC=1.N#N.[C:36]([O:40][C:41](=[O:50])[C:42]1[CH:47]=[CH:46][C:45]([C:48]#[CH:49])=[CH:44][CH:43]=1)([CH3:39])([CH3:38])[CH3:37]>C(#N)C.[Cu]I.CCN(CC)CC>[C:1]([O:5][C:6]([C:7]1[CH:12]=[CH:11][C:10]([C:49]#[C:48][C:45]2[CH:46]=[CH:47][C:42]([C:41]([O:40][C:36]([CH3:39])([CH3:38])[CH3:37])=[O:50])=[CH:43][CH:44]=2)=[CH:9][CH:8]=1)=[O:14])([CH3:4])([CH3:3])[CH3:2]