Synonyms
1,2-Bis[(dimethylamino)dimethylsilyl]ethane, 1,1-Ethylenebis(N,N,1,1-tetramethylsilanamine), 91166-50-6, 2,5-Bis(dimethylamino)-2,5-dimethyl-2,5-disilahexane, 1,4-Bis(dimethylamino)-1,1,4,4-tetramethyl-1,4-disilabutane, AC1N4ZJ6, 324639_ALDRICH, CTK8E3105, AKOS015895013, B1773, FT-0642190, I05-3359, 1,1 inverted exclamation marka-Ethylenebis(N,N,1,1-tetramethylsilanamine), N-[2-[dimethylamino(dimethyl)silyl]ethyl-dimethylsilyl]-N-methylmethanamine
Application
12-Bis(Dimethylaminodimethylsilyl)Ethane serves as a valuable reagent for safeguarding primary amines particularly those with lower pKa values such as substituted anilines by converting them into tetramethyldisilylazacyclopentane or Stabase adducts It is especially effective for protecting primary aromatic amines with pKa values between 10 and 11 This process involves heating equimolar amounts of 12-Bis(Dimethylaminodimethylsilyl)Ethane and anilines with a catalytic amount of zinc iodide under a nitrogen atmosphere at 140°C for five hours The resulting compounds can often be purified via vacuum distillation Reversion of the Stabase adducts back to their corresponding primary amines is easily accomplished in ether with methanol and a minimal amount of p-toluenesulfonic acid monohydrate The Stabase adduct stands out as an attractive protective group due to its straightforward synthesis stability in basic conditions and easy removal