
Zeitschrift fur Naturforschung, B: Chemical Sciences p. 593 - 603 (1997)
Update date:2022-08-03
Topics:
Geicke, Jan
Lorenz, Ingo-Peter
Mürschel, Petra
Polborn, Kurt
The reactions of [CpMn(CO)2(NO)]BF4 or CpFe(CO)2Cl with PPh2NHR (R = Ph, PPh2) lead to the salts [CpML(CO)PPh2NHR]X with monodentate aminophosphine ligands. In the case of R = PPh2 (= dppa) the complexes [CpML(dppa)]X with bidentate dppa are also formed. The salt [CpFe(CO)(dppa)]Cl can be deprotonated to give the neutral complex CpFe(CO){(PPh2)2N)} with the diphosphinoamide ligand, which can be N-alkylated by MeI to afford [CpFe(CO){(PPh2)2NMe}]I. The complex [CpMn(NO)(dppa)]BF4 undergoes a P-N cleavage reaction by the solvent methanol to form [CpMn(NO)(PPh2NH2)(PPh2OMe)]BF4. The non-chelated complexes [CpFe(CO)2PPh2NHR]Cl are deprotonated by DBU to give the neutral ferrioiminophosphoranes CpFe(CO)2PPh2 = NR. For R = PPh2 photolysis leads to CO-elimination and to CpFe(CO)(PPh2NPPh2). CpFe(CO)2PPh2NPPh2 can be alkylated by MeI or metallated by CpFe(CO)2Cl to form [CpFe(CO)2PPh2NPPh2Me]I or [CpFe(CO)2PPh2NPPh2(CO)2FeCp]Cl, respectively. Oxidation of CpFe(CO)2PPh2NPPh2 is possible by (SiMe3)2O2, sulfur, or selenium to lead to the neutral complexes CpFe(CO)2PPh2=NPPh2 = E (E = O, S, Se) with a heterodiene system. The IR and NMR spectra of all species as well as the X-ray structures of the complexes [CpFe(CO)dppa]Cl, [CpMn(NO)dppa]BF4 and [CpMn(NO)(PPh2NH2)(PPh2OMe)]BF4 are reported and discussed.
Shanghai Coupling Pharmaceutical R&D Co., Ltd.(expird)
Contact:+86 021 50106671
Address:403 Room No.4 Buiding, No. 526 Ruiqing Road, Shanghai Zhangjiang Hi-Tech Park
website:http://www.acrospharmatech.com
Contact:+1-3234804688
Address:Flat/RM 1502,Easey Commercial building 253-261 Hennessy Road,Wanchai,HongKong
Suzhou BEC Fine Chemicals Co., Ltd.
website:http://www.bek.com.cn
Contact:0512-68095917 18913193865
Address:6, Jin Shan Road, Suzhou New District, 215011 China Suzhou Nations Pharmaceutical Innovation Center Inside
Contact:+86-158-5814-5714
Address:No.9 YanAn Road,Hangzhou,Zhejiang,China
Hangzhou Maytime Bio-Tech Co.,Ltd.
website:http://www.maytime.com.cn
Contact:+86-571-88925295 88920965
Address:NO.2-1701 Ganghui Central Ningwei Street, Xiaoshan Hangzhou Zhejiang China
Doi:10.1007/BF00899471
(1952)Doi:10.1021/ja01856a022
(1941)Doi:10.1039/jr9310002542
(1931)Doi:10.1055/s-1983-30213
(1983)Doi:10.1016/S0040-4039(00)85891-8
(1982)Doi:10.1016/j.tetlet.2005.04.032
(2005)