Methoxyphenyl Substituted Bis(picolyl)phosphines and Phosphine Oxides. Issue 9 (23rd February 2016)

• Record Type: Journal Article
• Authors: Hettstedt, Christina; Unglert, Martin; Mayer, Robert J.; Frank, Anna; Karaghiosoff, Konstantin
• Is Part Of: European journal of inorganic chemistry. Issue 9(2016)
• Page Start: 1405
• Page End: 1414
• Publication Date: 2016-02-23
• Subjects: Ligand design -- Phosphines -- N, P ligands -- Coordination modes; Chemistry, Inorganic -- Periodicals; Organometallic chemistry -- Periodicals; Bioinorganic chemistry -- Periodicals; Solid state chemistry -- Periodicals; 546
• DOI: 10.1002/ejic.201600032
• Languages: English
• ISSNs: 1434-1948

Abstract

Abstract: Three new derivatives of methoxyphenyl‐substituted bis(picolyl)phosphines3 –5, the CH2 TMS substituted bis(picolyl)phosphine (6 ) and related phosphine oxides2b –5b have been synthesized. Syntheses were accomplished by reacting the corresponding dichlorophosphines with picolylTMS (7 ). An improved synthesis of most of the starting materials is also presented and enables increased ligand yields in all cases. The new bis(picolyl)phosphines and phosphine oxides are extensively characterized by 1 H, 13 C and 31 P NMR spectroscopy and, in the case of the literature known tris(picolyl)phosphine (2 ) and its new phosphine oxide derivative, single‐crystal X‐ray analysis was applied to structure elucidation efforts. The determination of the molecular structure of ( o ‐methoxyphenyl)dichlorophosphine (3a ) was achieved by X‐ray analysis of a co‐crystal consisting of3a and its rare phosphonic anhydride derivative8 . Abstract : New methoxyphenyl‐substituted bis(picolyl)phosphine derivatives and their corresponding phosphine oxides were synthesized. These newly generated species are multidentate, hemilabile and flexible N, P, N ligands with promising properties.