Imino-ene reaction of N-tosyl arylaldimines with α-methylstyrene: application in the synthesis of important amines
作者:Manoj K. Pandey、Alakesh Bisai、Ankur Pandey、Vinod K. Singh
DOI:10.1016/j.tetlet.2005.05.073
日期:2005.7
for the imino-ene reaction of N-tosylarylaldimines with α-methylstyrene. A wide variety of N-tosylarylaldimines were used to give homoallylamines in good to excellent yields under mild conditions. The imino-ene adduct was converted into a β-amino ketone. The synthesis of a 2,4-substituted pyrrolidine and a piperidine was also achieved from the imino-ene product via a Mitsunobu reaction and a Grubbs cyclization
Treatment of N-tosyl aldimines with dialkyl trimethylsilyl phosphites at 0 degrees C in the presence of iodine as a catalyst afforded the corresponding sulfonamide phosphonates in excellent yields within 1.5 to 2.5 h.
Synthesis of α-Aminonitriles through Strecker Reaction of N-Tosylaldimines Using Molecular Iodine¹
The Strecker reaction of N-tosylaldimines with trimethylsilylcyanide in the presence of catalytic amount of iodine at room temperature produces the corresponding protected α-aminonitriles in high yields. Strecker reaction - N-tosylaldimine - trimethylsilylcyanide - protected α-aminonitrile - iodine Part 187 in the series, Studies on Novel Synthetic Methodologies.