Chelated anionic aluminum

Michael S. Hill; David A. Atwood

doi:10.1080/10241229812331341479

Chelated anionic aluminum

Michael S. Hill, David A. Atwood

North Dakota State University

Research output: Contribution to journal › Article › peer-review

13 Citations (SciVal)

Abstract

Two equivalents of the bidentate ligands, 2,4-(R)₂-6-(CH₂NHR’)PhOH where R’ = alkyl and R = H (L₁) and ^tBu(L²) are combined with LiAlH₄ to form unique chelated aluminates of the form [(L¹)₂Al]Li(THG)₂ (R’ = ⁱPr (1), ⁱBu (2), ^tBu (3), Dipp (4) (Dipp = 2,6-(ⁱPr)₂Ph)) and [(L²)₂A1]Li(THF)₂ (R’ = ⁱPr (5), ⁱBu (6), ^tBu (7)). Compound 7 undergoes a salt elimination when combined with Me₂A1C1 to form the bimetallic derivative, (L²)₂A1 (A1Me₂) (R’ = ^tBu (8)). By comparison a related reaction with [ArO₄Al][Li(thf)₄] (Ar = 2,4-(^tBu)₂Ph (9)) leads to elimination of one of the aryloxide groups and the consequent formation of neutral species. All of the compounds were characterized by Mp, analyses, ¹H NMR, IR and, in the case of 4 and 7-9, by X-ray crystallography.

Original language	English
Pages (from-to)	285-292
Number of pages	8
Journal	Main Group Chemistry
Volume	2
Issue number	4
DOIs	https://doi.org/10.1080/10241229812331341479
Publication status	Published - 1 Jan 1998

ASJC Scopus subject areas

Organic Chemistry
Inorganic Chemistry
Materials Chemistry

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title = "Chelated anionic aluminum",

abstract = "Two equivalents of the bidentate ligands, 2,4-(R)2-6-(CH2NHR{\textquoteright})PhOH where R{\textquoteright} = alkyl and R = H (L1) and tBu(L2) are combined with LiAlH4 to form unique chelated aluminates of the form [(L1)2Al]Li(THG)2 (R{\textquoteright} = iPr (1), iBu (2), tBu (3), Dipp (4) (Dipp = 2,6-(iPr)2Ph)) and [(L2)2A1]Li(THF)2 (R{\textquoteright} = iPr (5), iBu (6), tBu (7)). Compound 7 undergoes a salt elimination when combined with Me2A1C1 to form the bimetallic derivative, (L2)2A1 (A1Me2) (R{\textquoteright} = tBu (8)). By comparison a related reaction with [ArO4Al][Li(thf)4] (Ar = 2,4-(tBu)2Ph (9)) leads to elimination of one of the aryloxide groups and the consequent formation of neutral species. All of the compounds were characterized by Mp, analyses, 1H NMR, IR and, in the case of 4 and 7-9, by X-ray crystallography.",

author = "Hill, {Michael S.} and Atwood, {David A.}",

year = "1998",

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doi = "10.1080/10241229812331341479",

language = "English",

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T1 - Chelated anionic aluminum

AU - Hill, Michael S.

AU - Atwood, David A.

PY - 1998/1/1

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N2 - Two equivalents of the bidentate ligands, 2,4-(R)2-6-(CH2NHR’)PhOH where R’ = alkyl and R = H (L1) and tBu(L2) are combined with LiAlH4 to form unique chelated aluminates of the form [(L1)2Al]Li(THG)2 (R’ = iPr (1), iBu (2), tBu (3), Dipp (4) (Dipp = 2,6-(iPr)2Ph)) and [(L2)2A1]Li(THF)2 (R’ = iPr (5), iBu (6), tBu (7)). Compound 7 undergoes a salt elimination when combined with Me2A1C1 to form the bimetallic derivative, (L2)2A1 (A1Me2) (R’ = tBu (8)). By comparison a related reaction with [ArO4Al][Li(thf)4] (Ar = 2,4-(tBu)2Ph (9)) leads to elimination of one of the aryloxide groups and the consequent formation of neutral species. All of the compounds were characterized by Mp, analyses, 1H NMR, IR and, in the case of 4 and 7-9, by X-ray crystallography.

AB - Two equivalents of the bidentate ligands, 2,4-(R)2-6-(CH2NHR’)PhOH where R’ = alkyl and R = H (L1) and tBu(L2) are combined with LiAlH4 to form unique chelated aluminates of the form [(L1)2Al]Li(THG)2 (R’ = iPr (1), iBu (2), tBu (3), Dipp (4) (Dipp = 2,6-(iPr)2Ph)) and [(L2)2A1]Li(THF)2 (R’ = iPr (5), iBu (6), tBu (7)). Compound 7 undergoes a salt elimination when combined with Me2A1C1 to form the bimetallic derivative, (L2)2A1 (A1Me2) (R’ = tBu (8)). By comparison a related reaction with [ArO4Al][Li(thf)4] (Ar = 2,4-(tBu)2Ph (9)) leads to elimination of one of the aryloxide groups and the consequent formation of neutral species. All of the compounds were characterized by Mp, analyses, 1H NMR, IR and, in the case of 4 and 7-9, by X-ray crystallography.

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DO - 10.1080/10241229812331341479

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EP - 292

JO - Main Group Chemistry

JF - Main Group Chemistry

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ER -

Chelated anionic aluminum

Abstract

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