Mechanistic and synthetic aspects of macrolide ring closure
作者:R.H. Wollenberg、J.S. Nimitz、D.Y. Gokcek
DOI:10.1016/s0040-4039(00)78608-4
日期:1980.1
“double-activation” mechanism for macrolide ring closure from relatively electron-rich 2-pyridyl thiolesters while a change of mechanism is observed for electron-poor 2-pyridyl thiolesters. Mechanistic and syntheticaspects of the ion-assisted cyclization are also discussed.
Nimitz, Jonathan S., Synthetic Communications, 1981, vol. 11, # 4, p. 273 - 280
作者:Nimitz, Jonathan S.
DOI:——
日期:——
Strain‐Release Pentafluorosulfanylation and Tetrafluoro(aryl)sulfanylation of [1.1.1]Propellane: Reactivity and Structural Insight**
作者:Yannick Kraemer、Clément Ghiazza、Abbey N. Ragan、Shengyang Ni、Sigrid Lutz、Elizabeth K. Neumann、James C. Fettinger、Nils Nöthling、Richard Goddard、Josep Cornella、Cody Ross Pitts
DOI:10.1002/anie.202211892
日期:2022.11.25
Merging SF5 and Ar−SF4 chemistry with strain-release functionalization of [1.1.1]propellane enables us to explore uncharted chemical space associated with C(sp3)−SF5 and C(sp3)−SF4Ar motifs. X-ray analyses of the resultant “hybrid isosteres” reveal remarkably short transannular nonbonding C⋅⋅⋅C contacts—among the shortest distances reported to date. DFT and SC-XRD data provide evidence that the wing
将 SF 5和 Ar−SF 4化学与[1.1.1]丙烷的应变释放功能化相结合,使我们能够探索与 C(sp 3 )−SF 5和 C(sp 3 )−SF 4 Ar 基序相关的未知化学空间。对所得“混合等排体”的 X 射线分析揭示了非常短的跨环非键合 C⋅⋅⋅C 接触,这是迄今为止报道的最短距离之一。 DFT 和 SC-XRD 数据证明翼 C−C 键在稳定中发挥着关键作用。