Reactions of Diethylberyllium and Diethylberyllium Trimethylamine With the Methylhydrazines

Abstract

ABSTRACT

Synthesis of Zirconium, Hafnium, and Tantalum Complexes with Sterically Demanding Hydrazide Ligands

“…Prior to our synthetic work, Ge(N(Me)NMe 2 ) 4 was the only structurally characterized homoleptic trialkylhydrazide complex reported . Halide−trimethylhydrazide derivatives were known and included SiCl 2 (N(Me)NMe 2 ) 2 , TaCl 3 (N(Me)NMe 2 ) 2 , and TiCl 2 (N(Me)NMe 2 ) 2 . − Other reported hydrazide complexes include Zn(N(H)NH 2 ) 2 , Be(N(R)NH 2 ) 2 (R = H or Me), EtBe(N(Me)NH 2 ), [EtBe(N(Me)NMe 2 )] n , [EtBe(N(Me)NHMe)] n , [EtBe(N(Me)NH 2 )] n , Mg(N(Ph)N(SiMe 3 ) 2 ) 2 , Mg(N(SiMe 3 )NMe 2 ) 2 , M(N(SiMe 3 )NMe 2 ) 3 (M = Ga or In), [RZn(N(H)NMe 2 )] 4 (R = Me or Et), [EtZn(N(SiMe 3 )NMe 2 )] 2 , [EtZn(N(Me)NMe 2 )] 4 , Et 4 Zn 3 (N(Et)NMe 2 ) 2 , [EtZn(N( i- Pr)NMe 2 )] n , and several alkali metal derivatives having silyl and/or phenyl substituents. − A extensive review on aluminum and gallium hydrazides has been published recently…”

Zinc Hydrazides and Alkoxyhydrazides: Organometallic Compounds with Novel Zn4N8, Zn4N6O and Zn4N4O2 Cage Structures

“…Hydrazides of other two-valent metal ions have been described; examples include the magnesium hydrazides Mg[NPhN(SiMe 3 ) 2 ] 2 and Mg[N(SiMe 3 )NMe 2 ] 2 , [9] and the beryllium hydrazide Be(NMeNMe 2 ) 2 . [10] The results of these investigations can also be compared with the better established chemistry of the alkali metal hydrazides, in particular that of lithium, which has many varieties of structural motifs. [11][12][13][14][15][16][17] A driving force for establishing routes to zinc hydrazides and derivatives and exploring their aggregation and reactivity is the need to find a molecular precursor route to zinc/nitrogen materials, which has not yet been attempted.…”

Convenient Palladium‐Catalyzed Reductive Carbonylation of Aryl Bromides Under Gas‐Free Conditions

“…[1] Traditionally, aromatic aldehydes are synthesized via Vielsmeier-Haag, Gattermann-Koch, Reimer-Tiemann and Duff reactions, which generally use high amounts of reagents, require multiple steps and generate wastes and side products. [2][3][4][5] Additionally, other synthetic protocols have also been developed in the past. The reduction of carboxylic acids or derivatives is conducted at a relatively low temperature, which limits the scope of functional groups that can be tolerated.…”