Mono- and Dialkylations of Pyrrole at C2 and C5 Positions by Nucleophilic Substitution Reaction in Ionic Liquid
摘要:
A novel ionic liquid methodology for pyrrole C-alkylation is described. The pyrrole alkylation is achieved with various simple alkyl halides and mesylates selectively at C2 and C5 positions in good yields with minimal byproducts under relatively mild conditions in various ionic liquids. 2-(3-Phenylpropyl)pyrrole (2a) was synthesized from pyrrole and 1-bromo-3-phenylpropane in a mixture solvent system, [bmim][SbF6] and CH3CN, in 81% yield at 115 degrees C for 44 h with 5% yield of dialkylated compound 3a.
N-phenylpropylsubstituierte Azole, Verfahren zu ihrer Herstellung und diese enthaltende Fungizide
申请人:BASF Aktiengesellschaft
公开号:EP0025882A1
公开(公告)日:1981-04-01
N-Phenylpropylsubstituierte Azole der Formel
in der R' einen Alkylrest oder Halogen, R2 Wasserstoff, einen Alkylrest oder Aralkylrest, der durch Halogen substituiert sein kann, m die Zahlen 0 bis 3 und X CH oder N bedeuten, sowie deren pflanzenphysiologisch verträgliche Säureadditionssalze und Metallkomplexe, Verfahren zu ihrer Herstellung und diese enthaltende Fungizide.
Provided is an organic electroluminescence device in which a single or a plurality of thin organic layers including at least a light emitting layer are sandwiched between an anode and a cathode. At least one of the thin organic layers includes: (A) a perylene compound having at least one halogen atom in its molecule; and (B) a compound having a fused aromatic ring having a ring carbon atoms of 12 to 15. The organic EL device has a high luminous efficiency and a long lifetime and is capable of emitting light having a color range of from an orange color to a red color.
Mono- and Dialkylations of Pyrrole at C2 and C5 Positions by Nucleophilic Substitution Reaction in Ionic Liquid
作者:Yogesh R. Jorapur、Chang-Hee Lee、Dae Yoon Chi
DOI:10.1021/ol047446v
日期:2005.3.1
A novel ionic liquid methodology for pyrrole C-alkylation is described. The pyrrole alkylation is achieved with various simple alkyl halides and mesylates selectively at C2 and C5 positions in good yields with minimal byproducts under relatively mild conditions in various ionic liquids. 2-(3-Phenylpropyl)pyrrole (2a) was synthesized from pyrrole and 1-bromo-3-phenylpropane in a mixture solvent system, [bmim][SbF6] and CH3CN, in 81% yield at 115 degrees C for 44 h with 5% yield of dialkylated compound 3a.