Ferrier rearrangement

Ferrier rearrangement
Named after	Robert J. Ferrier
Reaction type	Rearrangement reaction
Identifiers
RSC ontology ID	RXNO:0000229

The Ferrier rearrangement is an organic reaction that involves a nucleophilic substitution reaction combined with an allylic shift in a glycal (a 2,3-unsaturated glycoside). It was discovered by the carbohydrate chemist Robert J. Ferrier.^[1]^[2]

In the first step, a delocalized allyloxocarbenium ion (2) is formed, typically with the aid of a Lewis acid like indium(III) chloride or boron trifluoride. This ion reacts in situ with an alcohol, yielding a mixture of the α (3) and β (4) anomers of the 2-glycoside, with the double bond shifted to position 3,4.^[3]

Examples

Lewis acid	Alcohol	Conditions	Results
InCl₃	methanol	in dichloromethane	α:β = 7:1^[4]
dioxane	water	heating	75% yield^[5]
SnCl₄	methanol	in dichloromethane, –78 °C, 10 min	83% yield, α:β = 86:14^[6]
BF₃·O(C₂H₅)₂	isopropanol	in dichloromethane, RT, 24 hr	95% yield^[7]^[8]
ZnCl₂	ethanol	in toluene, RT, 30–60 min	65–95% yield, α:β = 89:11^[9]^[10]
BF₃·O(C₂H₅)₂	benzyl alcohol	in dichloromethane, –20 °C to RT, 1 hr	98% yield^[11]

Modifications

References

↑ Ferrier, Robert J. (1979). "Unsaturated Carbohydrates. Part 21. A Carboxylic Ring Closure of a Hex-5-enopyranoside Derivative". J. Chem. Soc. Perkin Trans. 1: 1455–1458. doi:10.1039/P19790001455.
↑ Ferrier, Robert J.; Zubkov, O. A. (2003). "Transformation of Glycals into 2,3-Unsaturated Glycosyl Derivatives". Org. React. 62: 569–736. doi:10.1002/0471264180.or062.04. ISBN 0-471-26418-0.
1 2 Konstantinović, Stanimir; et al. (2001). "The Ferrier rearrangement as the key step in the synthesis of C7–C16-alkyl 2,3-dideoxy glucosides from glucose and C7–C16-alkanols" (PDF). J. Serb. Chem. Soc. 66 (8): 499–505. doi:10.2298/JSC0108499K.
↑ Boga, S. B.; Balasubramanian, K. K. (2004). "Indium trichloride catalyzed Ferrier rearrangement – facile synthesis of 2,3-unsaturated glycosides". Arkivoc: 87–102. (open access publication)
↑ Bert. Fraser- Reid; Bruno. Radatus (1970). "4,6-Di-O-acetyl-aldehydo-2,3-dideoxy-D-erythro-trans-hex-2-enose. Probable reason for the 'al' in Emil Fischer's triacetyl glucal". J. Am. Chem. Soc. 92 (17): 5288–5290. doi:10.1021/ja00720a087.
↑ Eleuterio Alvarez; Maria T. Diaz; Ricardo Perez; Jose L. Ravelo; Alicia Regueiro; Jose A. Vera; Dacil Zurita; Julio D. Martin (1994). "Simple Designs for the Construction of Complex trans-Fused Polyether Toxin Frameworks. A Linear Strategy Based on Entropically Favored Oxirane Ring Enlargement in Epoxycycloalkenes Followed by Carbon-Carbon or Carbon-Oxygen Bond-Forming Cyclizations". J. Org. Chem. 59 (10): 2848. doi:10.1021/jo00089a034.
↑ Ferrier, R. J.; Prasad, N. (1969). "Unsaturated carbohydrates. Part IX. Synthesis of 2,3-dideoxy-α-D-erythro-hex-2-enopyranosides from tri-O-acetyl-D-glucal". Journal of the Chemical Society C: Organic (4): 570–575. doi:10.1039/J39690000570.
↑ Ferrier, R. J.; Prasad, N. (1969). "Unsaturated carbohydrates. Part X. Epoxidations and hydroxylations of 2,3-dideoxy-α-D-hex-2-enopyranosides. The four methyl 4,6-di-O-acetyl-2,3-anhydro-α-D-hexopyranosides". Journal of the Chemical Society C: Organic (4): 575–580. doi:10.1039/J39690000575.
↑ Kelly, David R.; Picton, Mark R. (2000). "Catalytic tin radical mediated tricyclisations. Part 1. Monocyclisation studies". Journal of the Chemical Society, Perkin Transactions 1 (10): 1559. doi:10.1039/b000661k.
↑ Kelly, David R.; Picton, Mark R. (2000). "Catalytic tin radical mediated tricyclisations. Part 2". Journal of the Chemical Society, Perkin Transactions 1 (10): 1571. doi:10.1039/b000662i.
↑ Donohoe, Timothy J.; Blades, Kevin; Helliwell, Madeleine (1999). "Synthesis of amino-sugars using the directed dihydroxylation reaction". Chemical Communications (17): 1733–1734. doi:10.1039/a904991f.
↑ Kozikowski, AP, Pyeong-uk Park (1984). "Synthesis of 2-substituted .DELTA.3-piperidines: the nitrogen analog of the Ferrier rearrangement. An approach to streptazolin". J. Org. Chem. 49 (9): 1674–1676. doi:10.1021/jo00183a044.{{cite journal}}: CS1 maint: multiple names: authors list (link)

Ferrier rearrangement

Examples

Modifications

Forming of C-glycosides

Nitrogen analogue

References

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