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Browsing by Author "Griffiths, D. Vaughan"
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Cyclisation reactions of 2-substituted benzoylphosphonates with trialkyl phosphites via nucleophilic attack on a carbonyl-containing ortho substituent
Cheong, Yuen-Ki; Duncanson, Philip; Griffiths, D. Vaughan (2008-03-03)Dimethyl 2-acetoxy- and dimethyl 2-benzoyloxy-benzoylphosphonate undergo cyclisation and deoxygenation in the presence of excess trimethyl phosphite to give dimethyl (3-methyl-1-benzofuran-2-yl)phosphonate and dimethyl ... -
Electron-rich heteroaroylphosphonates and their reaction with trimethyl phosphite
Griffiths, D. Vaughan; Al-Jeboori, Mohamad J.; Cheong, Yuen-Ki; Duncanson, Philip; Harris, Jayne E.; Salt, Michael C.; Taylor, Helen V. (2008)Dialkyl heteroaroylphosphonates based on thiophene, pyrrole or furan have been prepared and their reactions with trimethyl phosphite investigated. Deoxygenation of the carbonyl groups in these heteroaroylphosphonates occurs ... -
The impact of ligand structure on the rhenium tricarbonyl complexes from tripodal pyridine-containing chelators
Cheong, Yuen-Ki; Duncanson, Philip; Griffiths, D. Vaughan; Motevalli, Majid (2010-08) -
A novel approach to isoindolo[2,1-a]indol-6-ones
Duncanson, Philip; Cheong, Yuen-Ki; Motevalli, Majid; Griffiths, D. Vaughan (2012)A convenient route to isoindolo[2,1-a]indol-6-ones has been developed starting from the appropriate 2-(N-phthaloyl)benzoic acids. Formation of the acid chlorides with thionyl chloride followed by heating with triethyl ... -
Novel Ylidic Phosphoryl Compounds from Halogenated Furan-2,5-Diones with Trivalent Phosphorus Esters: Application of this Approach to New Trisphosphonates Containing a Geminal Bisphosphonate Unit
Griffiths, D. Vaughan; Benoit, David M.; Cheong, Yuen-Ki; Duncanson, Philip; Han, Xiao (2014-08-03)The reactions of trivalent phosphorus esters, including trialkyl phosphites, dialkyl phosphonites, and alkyl phosphinites, with 3-halo- and 3,4-dihalo-furan-2,5-diones has been shown to lead to the formation of novel ... -
Studies of rheniumtricarbonyl complexes of tripodal pyridyl-based ligands
Griffiths, D. Vaughan; Al-Jeboori, Mohamad J.; Arnold, Phillip J.; Cheong, Yuen-Ki; Duncanson, Philip; Motevalli, Majid (2010-04-05)The reaction of N-benzoyl and N-acetyl tris(pyridin-2-yl)methylamine 1b and 1c (LH = tpmbaH and tpmaaH) with [Re(CO)5Br] has been investigated and shown to proceed via the initial formation of a cationic rheniumtricarbonyl ... -
Studies of the reactions of tripodal pyridine-containing ligands with Re(CO)5Br leading to rheniumtricarbonyl complexes with potential biomedical applications
Griffiths, D. Vaughan; Cheong, Yuen-Ki; Duncanson, Philip; Motevalli, Majid (2011)The complexes formed from the reaction of N-acylated tris-(pyridin-2-yl)methylamine (LH) with [Re(CO)5Br] depend on the structure of the ligand and the reaction conditions. Thus, while N-[1,1,1-tris-(pyridin-2-yl)methyl]acetamide ...