Oxidative addition/cycloaddition of arenesulfonamides and triflamide to N-allyltriflamide and N,N-diallyltriflamide
作者:B. A. Shainyan、V. V. Astakhova、A. S. Ganin、M. Yu Moskalik、I. V. Sterkhova
DOI:10.1039/c7ra05831d
日期:——
iodotriflamidation of one or two CC bonds, and the product of intramolecular iodotriflamidation, 3,7-diiodo-1,5-bis[(trifluoromethyl)sulfonyl]-1,5-diazocane, and 3,7,9-tris[(trifluoromethyl)sulfonyl]-3,7,9-triazabicyclo[3.3.1]nonane. In contrast, with arenesulfonamides and trifluoroacetamide, N,N-diallyltriflamide gives the products of iodoamidation or/and iodochlorination at only one double bond.
N-烯丙基三氟化物在氧化体系中添加三氟化物(t- BuOCl + NaI)得到N,N ',N'-丙烷-1,2,3-三烷基三(三氟化物),而在相同条件下为芳烃磺酰胺和三氟乙酰胺非对映选择性地得到氯化/二聚的产物,(2 R,5 S)-2,5-双(氯甲基)-1,4-双[(三氟甲基)磺酰基]哌嗪。N,N-二烯丙基三氟化物与三氟化物反应可提供一或两个C的碘三氟化的产物C键,以及分子内碘三氟化的产物,3,7-二碘-1,5-双[(三氟甲基)磺酰基] -1,5-二唑烷和3,7,9-三[[三氟甲基]磺酰基] -3 ,7,9-三氮杂双环[3.3.1]壬烷。相反,对于芳烃磺酰胺和三氟乙酰胺,N,N-二烯丙基三氟化物仅在一个双键处给出碘酰胺化或/和碘氯化的产物。