D,L-α-tocopherol synthesis catalyzed by the Brønsted acidic ionic liquids

Huabing Xing; Tao Wang; Zhenhuan Zhou; Youyuan Dai

doi:10.1080/00397910600781166

D,L-α-tocopherol synthesis catalyzed by the Brønsted acidic ionic liquids

Huabing Xing, Tao Wang^*, Zhenhuan Zhou, Youyuan Dai

^*Corresponding author for this work

Tsinghua University

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

11 Citations (Scopus)

Abstract

The synthesis of D,L-α-tocopherol from trimethylhydroquinone and isophytol using the Brønsted acidic SO₃H-functionalized ionic liquids as catalysts was explored. The catalytic activities of the SO ₃H-functionalized ionic liquids were dependent on their anions. The yield of D,L-α-tocopherol also depended on the solvent, which was the reaction medium. A yield of 94.3% was obtained using the SO₃H- functionalized ionic liquid with [BF₄^-] anion as catalyst in propylene carbonate/heptane. The reaction mixture exhibited good biphasic behaviors, so that the produced D,L-α-tocopherol could be separated by decantation. The SO₃H-functionalized ionic liquids could be reused after the removal of water.

Original language	English
Pages (from-to)	2433-2439
Number of pages	7
Journal	Synthetic Communications
Volume	36
Issue number	17
DOIs	https://doi.org/10.1080/00397910600781166
Publication status	Published - 1 Aug 2006
Externally published	Yes

Keywords

Brønsted acidic ionic liquid
D-L-α-tocopherol
Synthesis

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10.1080/00397910600781166

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title = "D,L-α-tocopherol synthesis catalyzed by the Br{\o}nsted acidic ionic liquids",

abstract = "The synthesis of D,L-α-tocopherol from trimethylhydroquinone and isophytol using the Br{\o}nsted acidic SO3H-functionalized ionic liquids as catalysts was explored. The catalytic activities of the SO 3H-functionalized ionic liquids were dependent on their anions. The yield of D,L-α-tocopherol also depended on the solvent, which was the reaction medium. A yield of 94.3% was obtained using the SO3H- functionalized ionic liquid with [BF4-] anion as catalyst in propylene carbonate/heptane. The reaction mixture exhibited good biphasic behaviors, so that the produced D,L-α-tocopherol could be separated by decantation. The SO3H-functionalized ionic liquids could be reused after the removal of water.",

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author = "Huabing Xing and Tao Wang and Zhenhuan Zhou and Youyuan Dai",

year = "2006",

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TY - JOUR

T1 - D,L-α-tocopherol synthesis catalyzed by the Brønsted acidic ionic liquids

AU - Xing, Huabing

AU - Wang, Tao

AU - Zhou, Zhenhuan

AU - Dai, Youyuan

PY - 2006/8/1

Y1 - 2006/8/1

N2 - The synthesis of D,L-α-tocopherol from trimethylhydroquinone and isophytol using the Brønsted acidic SO3H-functionalized ionic liquids as catalysts was explored. The catalytic activities of the SO 3H-functionalized ionic liquids were dependent on their anions. The yield of D,L-α-tocopherol also depended on the solvent, which was the reaction medium. A yield of 94.3% was obtained using the SO3H- functionalized ionic liquid with [BF4-] anion as catalyst in propylene carbonate/heptane. The reaction mixture exhibited good biphasic behaviors, so that the produced D,L-α-tocopherol could be separated by decantation. The SO3H-functionalized ionic liquids could be reused after the removal of water.

AB - The synthesis of D,L-α-tocopherol from trimethylhydroquinone and isophytol using the Brønsted acidic SO3H-functionalized ionic liquids as catalysts was explored. The catalytic activities of the SO 3H-functionalized ionic liquids were dependent on their anions. The yield of D,L-α-tocopherol also depended on the solvent, which was the reaction medium. A yield of 94.3% was obtained using the SO3H- functionalized ionic liquid with [BF4-] anion as catalyst in propylene carbonate/heptane. The reaction mixture exhibited good biphasic behaviors, so that the produced D,L-α-tocopherol could be separated by decantation. The SO3H-functionalized ionic liquids could be reused after the removal of water.

KW - Brønsted acidic ionic liquid

KW - D-L-α-tocopherol

KW - Synthesis

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U2 - 10.1080/00397910600781166

DO - 10.1080/00397910600781166

M3 - Article

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SN - 0039-7911

VL - 36

SP - 2433

EP - 2439

JO - Synthetic Communications

JF - Synthetic Communications

IS - 17

ER -

D,L-α-tocopherol synthesis catalyzed by the Brønsted acidic ionic liquids

Abstract

Keywords

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