91946-71-3Relevant academic research and scientific papers
Propargyl-, Allenyl- and Alkinyl-Phosphanes; Synthesis, Reactivity, Isomerization
Lang, Heinrich,Lay, Uwe,Leise, Michael,Zsolnai, Laszlo
, p. 27 - 36 (2007/10/02)
The synthesis and reactivity of non-coordinated and coordinated propargyl phosphanes are discussed.The isomerization of the propargyl unit in (R)P(Cl)(CH2CCH) (3) (R = 2,4,6-tBu3C6H2O) in the presence of NEt3 yields the allenyl substituted product (R)P(Cl)(CH=C=CH2) (4).However, in the presence of HNEt2 the dimethylenecyclobutane 7 is formed.Different synthetic pathways for the preparation of LnMP(Ph)m(CH2CCH)3-m complexes (m = 2: LnM = (η5-(C5H5)(CO)2Mn: 10a; LnM = (CO)5Cr: 10b; m = 1: LnM = (η5-C5H5)(CO)2Mn: 13a; LnM = (η5-C5H4Me)(CO)2Mn: 13b) are described.The synthesis of the alkynyl substituted phosphane compounds LnMP(Ph)m(CCR)3-m (m = 2: R = Ph, LnM = (η5-C5H5)(CO)2Mn: 20a; LnM = (CO)5Cr: 20b; R = nBu, LnM = (CO)5Cr: 20c; m = 1: R = Ph, LnM = (η5-C5H5)(CO)2Mn: 22) was also possible.The reaction of (η5-C5H4Me)(CO)2MnPPh(CH2CCH)2 (13b) with Co2(CO)8 affords in high yields (η5-C5H4Me)(CO)2MnPPh2-CH2CCH)Co2(CO)6>2 (15).All new compounds have been characterized by analytical and spectroscopic data (IR, 1H-, 13C(1H)-, 31P(1H)-NMR, MS) and (η5-C5H5)(CO)2MnP(Ph)(CH2CCH)2 (13a) by X-ray analysis.Keywords: Propargyl, Allenyl and Alkynyl Phosphanes, Coordination Ability, Isomerization, Crystal Structure
ALKINYLPHOSPHINHALTIGE SUBSTITUTIONSPRODUKTE VON CHROM- UND WOLFRAM-HEXACARBONYL
Hengefeld, A.,Nast, R.
, p. 151 - 156 (2007/10/02)
The photochemical preparation of CC6H5)n(C6H5)3-n>, cis-CC6H5)n(C6H5)3-n> (M = Cr, W; n = 1,2,3) and fac-CC6H5)(C6H5)2)3> by the corresponding substitution reactions of the hexacarbonyls is described.The IR and Ra
