Pd(OAc)۲/۱,۱′-Methylene-۳,۳′-bis[(N-(isopropyl)imidazol-۲-ylidene]: An Efficient Catalyst for the Heck Arylation of Various Olefins
Publish place: Organic Chemistry Research، Vol: 7، Issue: 1
Publish Year: 1400
نوع سند: مقاله ژورنالی
زبان: English
View: 99
This Paper With 9 Page And PDF Format Ready To Download
- Certificate
- من نویسنده این مقاله هستم
استخراج به نرم افزارهای پژوهشی:
شناسه ملی سند علمی:
JR_ORGC-7-1_008
تاریخ نمایه سازی: 3 مهر 1402
Abstract:
The Mizoroki-Heck coupling reaction has been carried out using Pd(OAc)۲ and bisimidazolium (۱,۱′-methylene-۳,۳′-bis[(N-(isopropyl)imidazol-۲-ylidene]dibromide) for aryl bromides as well as less reactive chlorobenzene with mono- and di-substituted olefins. Only ۰.۰۲۵ mol% of Pd(II) shows a high activity toward the coupling reaction with turnover number (TON) ≈ ۶۰۰-۳۹۶۰. Further, this catalyst system, Pd(OAc)۲/Bisimidazolium, exhibits the excellent selectivity for the trans-isomer coupling products and the terminal arylation coupling products for mono- and di-substituted olefins, respectively. The nature of olefins (n-butyl acrylate, styrene, and ۱,۱-disubstituted olefins) has a significant contribution on the yield of the coupling products.
Keywords:
Authors
Marzieh Daryanavard
Estahban Higher Education Center-Shiraz University, Estahban, Iran
Behzad Mohammadi
Department of Inorganic Chemistry, Faculty of Chemistry, Razi University, Kermanshah, ۶۷۱۴۹, Iran
Shirin Nadri
Department of Inorganic Chemistry, Faculty of Chemistry, Razi University, Kermanshah, ۶۷۱۴۹, Iran
Mohammad Joshaghani
Department of Inorganic Chemistry, Faculty of Chemistry, Razi University, Kermanshah, ۶۷۱۴۹, Iran