Substitution of the Benzotriazolyl Group in<b><i>N</i></b>-(α-Amidoalkyl)benzotriazoles and<b><i>N</i></b>-(α-Sulfonamidoalkyl)benzotriazoles with Allylsamarium Bromide
作者:Xiaoxia Wang、Jian Li、Yongmin Zhang
DOI:10.1081/scc-120024744
日期:2003.10
The nucleophilic substitution of the benzotriazolyl group in the N-(alpha-benzotriazol-1-ylalkyl)amides and N-(alpha-benzotriazol-1-ylalkyl) sulfonamides with allylsamarium bromide was investigated, and the corresponding homoallylamides or homoallylsulfonamides were obtained in good to excellent yields.
Shono, Tatsuya; Matsumura, Yoshihiro; Katoh, Susumu, Journal of the American Chemical Society, 1990, vol. 112, # 6, p. 2368 - 2372
A gauche–gauche interaction is proposed as a powerful controlling factor for the stereochemistry in the intramolecular nitrile oxide cycloaddition reaction derived from N-protected 3-(N-allylamino)propionaldehyde and 2-(N-homoallylamino)acetaldehyde oximes. High levels of stereoselectivity (76% de to perfect) were obtained from the reaction involving nitrile oxides with substituents at the adjacent