Versatile Syntheses of Optically Pure PCE Pincer Ligands: Facile Modifications of the Pendant Arms and Ligand Backbones

Abstract

Society. It incorporates referee's comments but changes resulting from the publishing process, such as copyediting, structural formatting, may not be reflected in this document.

Catalytic and Mechanistic Developments of the Nickel(II) Pincer Complex‐Catalyzed Hydroarsination Reaction

“…15 (8) ). [18] The theoretical NiÀCl bond length of complex 3 also highly resembled that of other similar square-planar PCP-Ni II pincerc omplexes between 2.20-2. 24 .…”

“…However,t hese axial interactions should be minor considering the high percent buried volume (% V bur )o fN i II complex 3 in which the bulky ligand limits accesso fr eagents to the metal center. [18] In fact, this Ni-X-As type interaction was not unique to only chlorides. DFT calculations were also attempted for Ni-Br-As complex A1' and DG (formation) values were similarly spontaneous at À52.3 kcal mol À1 (Table 3).…”

Design, synthesis and applications of chiral functionalized phosphapalladacycles

“…The ineffectiveness of 54e is surprising as it showed similar high catalytic properties as 67 in the analogous P-H addition reaction involving enones. 114,262 We believe that this striking observation is attributed to the fact that the CP-and the PCP-catalysts operate via different reaction mechanisms.…”

“…[112][113][114] The chiral tridentate phosphine cyclometal pincer 53, 54, and 57 were synthesized through sequential bihydrophosphination and metalation. [113][114][115][116][117] The yields of the bihydrophosphination were almost full conversion > 99%, and the dr for most of the ligands were better than 95:5. After the P-H addition completed, the cyclometallation was conducted via treatment the free ligands with appropriate metal source directly.…”

“…Spectroscopic data of the products Previously, we have also disclosed the synthesis of a series of functionalized phosphines such as ketoester-150 , pyridyl-113 , keto- 108,114 , ester- 114,251 , and amidophosphines 148,150 . We herein reported the synthesis of an enantioenriched tertiary phosphine containing the sulfoxide group.…”