Reactivity Studies of LAlH₂ [L = HC(CMeNAr)₂, Ar = 2, 6‐iPr₂C₆H₃] with 2‐[(2‐Hydroxybenzylidene)amino]‐3‐mercapto­propionic Acid and Benzene‐1, 2‐diamine

Abstract

Abstract. The reaction of LAlH 2 [L = HC(CMeNAr) 2 , Ar = 2,6-iPr 2 C 6 H 3 ] (1) with 2-[(2-hydroxybenzylidene)amino]-3-mercaptopropionic acid and benzene-1,2-diamine resulted in the compounds (2)andLAl(μ-NH) 2 -(o-C 6 H 4 ) (3), respectively. Compound 2 is an unusual aluminum Schiff base, which exhibits a C 3 NAlO six-and a C 2 NAlO five-membered

N-Tosyl Hydrazone Precursor for Diazo Compounds as Intermediates in the Synthesis of Aluminum Complexes

“…The β-diketiminato aluminum dihydride LAlH 2 ( 1 ; L = HC­(CMeNAr) 2 , Ar = 2,6- i Pr 2 C 6 H 3 ) can react with small molecules, , unsaturated species, ,, amines, − and ionic compounds to generate interesting aluminum compounds. So far, only LAl­(NHNCHSiMe 3 ) 2 has been prepared via the end-on insertion of the diazo group of N 2 CHSiMe 3 into each Al–H bond of LAlH 2 ( 1 ) .…”

β‐Diketiminate Aluminum Dihydride is a Valuable Precursor for the Preparation of Acyclic and Cyclic Systems

“…Of particular note is the observation that β ‐diketiminate aluminum dihydrides and their derivatives have been found to function like transition metal catalysts with significant catalytic effects in hydroboration and addition reactions of organic compounds [7] . Another very characteristic direction of LAlH 2 is the reaction with amines, [8] phenols, [9] alcohols, [10] carboxylic acids, [8b] thiol, [4b] etc., where the linkage of Al to heteroatoms is achieved by intermolecular elimination of hydrogen, resulting in the creation of many novel products. Among them, the most representative ones are the reactions of LAlH 2 with HN‐ [8a,11] or HO‐ [9a,12] moieties, as shown in Scheme 1, and the resulting products exhibited a large diversity in structure depending on the reaction ratio, the steric hindrance of R groups, and the amount or distance of NH/OH groups contained in each reactant molecule.…”

“…In this area, extensive work has been carried out in preparing products containing X−O−Al−O−X linkage in acyclic structure [1e,9,13] as well as in cyclic structure [8b,10] from LAlH 2 . In particular, the reactions of LAlH 2 with boric acids generated the B−O−Al−O−B linkage in acyclic [14] and spirocyclic ring structures, [14–15] forming a characteristic study.…”