Highly hindered γ-PIII-functionalised alkoxo-lithium complexes: Syntheses and structures of [Li(μ-OCBUt 2CH2PR2)]2 (R = Me or Ph) and [Li(μ-OCBut2CH2PPh2) 2Li(OCBut2)]

Lutz M. Engelhardt; Jack Mac B. Harrowfield; Michael F. Lappert; Iain A. MacKinnon; Burns H. Newton; Colin L. Raston; Brian W. Skelton; Allan H. White

doi:10.1039/C39860000846

Highly hindered γ-P^III-functionalised alkoxo-lithium complexes: Syntheses and structures of [Li(μ-OCBU^t ₂CH₂PR₂)]₂ (R = Me or Ph) and [Li(μ-OCBu^t₂CH₂PPh₂) ₂Li(OCBu^t₂)]

Lutz M. Engelhardt, Jack Mac B. Harrowfield, Michael F. Lappert, Iain A. MacKinnon, Burns H. Newton, Colin L. Raston, Brian W. Skelton, Allan H. White

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

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Abstract

Reaction of Li(CH₂PR₂)(tmeda) (R = Me or Ph; tmeda = N,N,N′,N′-tetramethylethylenediamine) with di-t-butyl ketone yields [Li(μ-OCBU^t₂CH₂PR₂)]₂ [R = Me, (1)] or [Li(μ-OCBu^t₂CH₂PPh ₂)₂Li(OCBu^t₂)], (3); compound (2), the diphenyl analogue of (1), is accessible either by reaction of (3) and further Li(CH₂PPh₂)(tmeda) or by lithiation of Ph ₂PCH₂C(OH)Bu^t₂: the γ-P-functionalised lithium alkoxides (1) - (3) are shown by X-ray crystallography to have Li-P bonds and very short Li-O and Li ··· Li contacts, and compound (3) is structurally similar to the adduct proposed as an intermediate in the important carbanionic alkylation of a ketone.

Original language	English
Pages (from-to)	846-848
Number of pages	3
Journal	Journal of the Chemical Society, Chemical Communications
Issue number	11
DOIs	https://doi.org/10.1039/C39860000846
Publication status	Published - 1986
Externally published	Yes

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Engelhardt, L. M., Harrowfield, J. M. B., Lappert, M. F., MacKinnon, I. A., Newton, B. H., Raston, C. L., Skelton, B. W., & White, A. H. (1986). Highly hindered γ-P^III-functionalised alkoxo-lithium complexes: Syntheses and structures of [Li(μ-OCBU^t ₂CH₂PR₂)]₂ (R = Me or Ph) and [Li(μ-OCBu^t₂CH₂PPh₂) ₂Li(OCBu^t₂)]. Journal of the Chemical Society, Chemical Communications, (11), 846-848. https://doi.org/10.1039/C39860000846

@article{373b24566c4d4574b37be4b0313dd744,

title = "Highly hindered γ-PIII-functionalised alkoxo-lithium complexes: Syntheses and structures of [Li(μ-OCBUt 2CH2PR2)]2 (R = Me or Ph) and [Li(μ-OCBut2CH2PPh2) 2Li(OCBut2)]",

abstract = "Reaction of Li(CH2PR2)(tmeda) (R = Me or Ph; tmeda = N,N,N′,N′-tetramethylethylenediamine) with di-t-butyl ketone yields [Li(μ-OCBUt2CH2PR2)]2 [R = Me, (1)] or [Li(μ-OCBut2CH2PPh 2)2Li(OCBut2)], (3); compound (2), the diphenyl analogue of (1), is accessible either by reaction of (3) and further Li(CH2PPh2)(tmeda) or by lithiation of Ph 2PCH2C(OH)But2: the γ-P-functionalised lithium alkoxides (1) - (3) are shown by X-ray crystallography to have Li-P bonds and very short Li-O and Li ··· Li contacts, and compound (3) is structurally similar to the adduct proposed as an intermediate in the important carbanionic alkylation of a ketone.",

author = "Engelhardt, {Lutz M.} and Harrowfield, {Jack Mac B.} and Lappert, {Michael F.} and MacKinnon, {Iain A.} and Newton, {Burns H.} and Raston, {Colin L.} and Skelton, {Brian W.} and White, {Allan H.}",

year = "1986",

doi = "10.1039/C39860000846",

language = "English",

pages = "846--848",

journal = "Journal of the Chemical Society, Chemical Communications",

issn = "0022-4936",

publisher = "Chemical Society",

number = "11",

}

Engelhardt, LM, Harrowfield, JMB, Lappert, MF, MacKinnon, IA, Newton, BH, Raston, CL, Skelton, BW & White, AH 1986, 'Highly hindered γ-P^III-functionalised alkoxo-lithium complexes: Syntheses and structures of [Li(μ-OCBU^t ₂CH₂PR₂)]₂ (R = Me or Ph) and [Li(μ-OCBu^t₂CH₂PPh₂) ₂Li(OCBu^t₂)]', Journal of the Chemical Society, Chemical Communications, no. 11, pp. 846-848. https://doi.org/10.1039/C39860000846

Highly hindered γ-P^III-functionalised alkoxo-lithium complexes: Syntheses and structures of [Li(μ-OCBU^t ₂CH₂PR₂)]₂ (R = Me or Ph) and [Li(μ-OCBu^t₂CH₂PPh₂) ₂Li(OCBu^t₂)]. / Engelhardt, Lutz M.; Harrowfield, Jack Mac B.; Lappert, Michael F. et al.
In: Journal of the Chemical Society, Chemical Communications, No. 11, 1986, p. 846-848.

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

TY - JOUR

T1 - Highly hindered γ-PIII-functionalised alkoxo-lithium complexes

T2 - Syntheses and structures of [Li(μ-OCBUt 2CH2PR2)]2 (R = Me or Ph) and [Li(μ-OCBut2CH2PPh2) 2Li(OCBut2)]

AU - Engelhardt, Lutz M.

AU - Harrowfield, Jack Mac B.

AU - Lappert, Michael F.

AU - MacKinnon, Iain A.

AU - Newton, Burns H.

AU - Raston, Colin L.

AU - Skelton, Brian W.

AU - White, Allan H.

PY - 1986

Y1 - 1986

N2 - Reaction of Li(CH2PR2)(tmeda) (R = Me or Ph; tmeda = N,N,N′,N′-tetramethylethylenediamine) with di-t-butyl ketone yields [Li(μ-OCBUt2CH2PR2)]2 [R = Me, (1)] or [Li(μ-OCBut2CH2PPh 2)2Li(OCBut2)], (3); compound (2), the diphenyl analogue of (1), is accessible either by reaction of (3) and further Li(CH2PPh2)(tmeda) or by lithiation of Ph 2PCH2C(OH)But2: the γ-P-functionalised lithium alkoxides (1) - (3) are shown by X-ray crystallography to have Li-P bonds and very short Li-O and Li ··· Li contacts, and compound (3) is structurally similar to the adduct proposed as an intermediate in the important carbanionic alkylation of a ketone.

AB - Reaction of Li(CH2PR2)(tmeda) (R = Me or Ph; tmeda = N,N,N′,N′-tetramethylethylenediamine) with di-t-butyl ketone yields [Li(μ-OCBUt2CH2PR2)]2 [R = Me, (1)] or [Li(μ-OCBut2CH2PPh 2)2Li(OCBut2)], (3); compound (2), the diphenyl analogue of (1), is accessible either by reaction of (3) and further Li(CH2PPh2)(tmeda) or by lithiation of Ph 2PCH2C(OH)But2: the γ-P-functionalised lithium alkoxides (1) - (3) are shown by X-ray crystallography to have Li-P bonds and very short Li-O and Li ··· Li contacts, and compound (3) is structurally similar to the adduct proposed as an intermediate in the important carbanionic alkylation of a ketone.

UR - http://www.scopus.com/inward/record.url?scp=37049083742&partnerID=8YFLogxK

U2 - 10.1039/C39860000846

DO - 10.1039/C39860000846

M3 - Article

SN - 0022-4936

SP - 846

EP - 848

JO - Journal of the Chemical Society, Chemical Communications

JF - Journal of the Chemical Society, Chemical Communications

IS - 11

ER -

Highly hindered γ-P^III-functionalised alkoxo-lithium complexes: Syntheses and structures of [Li(μ-OCBU^t ₂CH₂PR₂)]₂ (R = Me or Ph) and [Li(μ-OCBu^t₂CH₂PPh₂) ₂Li(OCBu^t₂)]

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