A comparative study on aldol-type condensation reactions of cyclic, acyclic and substituted cyclic ketones by the W(CO)(6)/CCl4/UV system
Yükleniyor...
Dosyalar
Tarih
2005
Yazarlar
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Wiley
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
Aldol-type condensation reactions of a number of cyclic, acyclic and substituted cyclic ketones were investigated using the W(CO)(6)/CCl4/UV system. The progress of the reactions was followed by IR and GC-MS techniques. The cyclic ketone derivatives with beta- and gamma-substituent gave the expected condensation products. However, the alpha-substituted cyclic, acyclic and unsubstituted cyclic ketones with rings larger than six did not. Formation of [W]-ketone complexes with all of the ketones used was observed by FTIR. With respect to our studies, a mechanism involving an intermediate seven-coordinate tungsten complex has been proposed.
Açıklama
Anahtar Kelimeler
Photochemistry, Metal Carbonyls, Tungsten Hexacarbonyl, Aldol Condensation, Ketones, Cyclic Ketones, Seven Coordination, Metal-carbene Complexes
Kaynak
Applied Organometallic Chemistry
WoS Q Değeri
Q2
Scopus Q Değeri
Q2
Cilt
19
Sayı
12
