Synthesis of Cyclic 1-Alkenylboronates via Zr-Mediated Double Functionalization of Alkynylboronates and Sequential Ru-Catalyzed Ring-Closing Olefin Metathesis
摘要:
Synthesis of novel cyclic 1-alkenylboronates is accomplished through the zirconium-mediated regio- and stereoselective double functionalization of 1-alkynylboronates and the subsequent ruthenium-catalyzed ring-closing metathesis (RCM). The obtained substituted cyclic 1-alkenylboronates are transformed into o-terphenyl and triphenylene derivatives.
Synthesis of Cyclic 1-Alkenylboronates via Zr-Mediated Double Functionalization of Alkynylboronates and Sequential Ru-Catalyzed Ring-Closing Olefin Metathesis
摘要:
Synthesis of novel cyclic 1-alkenylboronates is accomplished through the zirconium-mediated regio- and stereoselective double functionalization of 1-alkynylboronates and the subsequent ruthenium-catalyzed ring-closing metathesis (RCM). The obtained substituted cyclic 1-alkenylboronates are transformed into o-terphenyl and triphenylene derivatives.
Allylation of Orthoquinones Towards Annulated Polycyclic Aromatic Systems
作者:Mariusz Kędziorek、Liliana Dobrzańska
DOI:10.3390/molecules23082043
日期:——
Promising results of an efficient and convenient strategy for the annulation of polycyclic aromatic compounds (PACs), employing orthoquinones as starting material and comprising allylation, pinacol rearrangement, ring-closing metathesis (RCM), and one-pot reduction followed by Wagner-Meerwein rearrangement, are presented. The strategy involves introducing triallylborane prepared in situ in the allylation
Application of thermal kinetics to small carbon ion clusters
作者:Chava Lifshitz、Pablo Sandler、Hans Friedrich Gruetzmacher、Jing Sun、Thomas Weiske、Helmut Schwarz
DOI:10.1021/j100127a006
日期:1993.6
Kinetic energy release distributions (KERDS') were obtained experimentally for unimolecular decomposition of small carbon ion clusters C(n)+, n = 10-13 and 18, made by dissociative ionization from perchloro conjugated hydrocarbons. A model-free approach due to Klots, based on the application of thermal kinetics to small systems, allowed the extraction of binding energies for these clusters. The results were found to be in very good agreement with literature values for collisionally activated dissociation (CAD) threshold energies. The ion C-11+ demonstrates a particularly high binding energy in agreement with its magic character in C(n)+ mass spectra, while C-13+ has a relatively low binding energy, reflected in its low abundance in such spectra.
Metal-ammonia reduction of triphenylene
作者:Z. Marcinow、A. Sygula、P. W. Rabideau
DOI:10.1021/jo00250a035
日期:1988.7
MAREINOW, Z.;SYGULA, A.;RABIDEAU, P. W., J. ORG. CHEM., 53,(1988) N 15, 3603-3606
作者:MAREINOW, Z.、SYGULA, A.、RABIDEAU, P. W.
DOI:——
日期:——
Synthesis of Cyclic 1-Alkenylboronates via Zr-Mediated Double Functionalization of Alkynylboronates and Sequential Ru-Catalyzed Ring-Closing Olefin Metathesis
Synthesis of novel cyclic 1-alkenylboronates is accomplished through the zirconium-mediated regio- and stereoselective double functionalization of 1-alkynylboronates and the subsequent ruthenium-catalyzed ring-closing metathesis (RCM). The obtained substituted cyclic 1-alkenylboronates are transformed into o-terphenyl and triphenylene derivatives.