Yeni Ru-NHC Komplekslerinin Sentezi, Karakterizasyonu ve Aminlerin Alkilasyonundaki Uygulamaları

Yıl 2018, Cilt: 22 Sayı: Özel, 127 - 132, 05.10.2018

Öznur Doğan Ulu

Öz

Bu çalışmada, benzhidril grubu içeren benzimidazolyum tuzları ilk olarak Ag₂O ile etkileştirilerek Ag-NHC kompleksi elde edildi. Elde edilen Ag-NHC kompleksi izole edilmeden [RuCl₂(p-simen)₂]₂ ile etkileştirilerek iki yeni rutenyum N-heterosiklik karben (Ru-NHC) kompleksi sentezlendi. Sentezlenen komplekslerin yapıları ¹H-NMR, ¹³C-NMR, FT-IR ve elementel analiz yöntemleriyle karakterize edildi. Ayrıca, sentezlenen Ru-NHC kompleksleri, aminlerin alkoller ile alkilasyonu tepkimelerinde katalizör olarak kullanıldı. Alkilasyon tepkimesi, çevreye duyarlı ve ekonomik açıdan avantajlı olduğu için ödünç hidrojen metodolojisi yöntemi ile yapıldı. Bütün tepkimelerde %1 mol katalizör miktarı kullanıldı.  Elde edilen sonuçlar katalizörlerin N-alkilasyon tepkimesinde aktif olduğunu gösterdi. Ayrıca bu çalışmada kullanılan katalizörler literatürdeki benzerleriyle kıyaslandığında aktivitelerinin yaklaşık olarak aynı olduğu görülmüştür.

Anahtar Kelimeler

Rutenyum katalizörü, N-Alkilasyon; Amin; N-heterosiklik karben

Kaynakça

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