Indium triflate catalyzed microwave-assisted alkenylation of methoxyphenols: Synthesis of indenes and chromenes

V. Kameswara Rao; Pinku Kaswan; Keykavous Parang; Anil Kumar

doi:10.1039/c5ob01734c

Indium triflate catalyzed microwave-assisted alkenylation of methoxyphenols: Synthesis of indenes and chromenes

V. Kameswara Rao, Pinku Kaswan, Keykavous Parang, Anil Kumar

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

7 Scopus citations

Abstract

In(OTf)₃ catalyzed microwave-assisted alkenylation of methoxyphenols was investigated. Exclusive formation of either indenes or chromenes was observed depending on the position of the methoxy group on phenol. The structures of 1H-inden-4-ol derivatives (4a-e) and 4H-chromene derivatives (5a-j) were established by NMR (¹H & ¹³C) and high-resolution mass spectra, which were further supported by single crystal X-ray analysis of 4c and 5a.

Original language	English (US)
Pages (from-to)	11072-11077
Number of pages	6
Journal	Organic and Biomolecular Chemistry
Volume	13
Issue number	45
DOIs	https://doi.org/10.1039/c5ob01734c
State	Published - 2015
Externally published	Yes

ASJC Scopus subject areas

Physical and Theoretical Chemistry
Organic Chemistry
Biochemistry

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title = "Indium triflate catalyzed microwave-assisted alkenylation of methoxyphenols: Synthesis of indenes and chromenes",

abstract = "In(OTf)3 catalyzed microwave-assisted alkenylation of methoxyphenols was investigated. Exclusive formation of either indenes or chromenes was observed depending on the position of the methoxy group on phenol. The structures of 1H-inden-4-ol derivatives (4a-e) and 4H-chromene derivatives (5a-j) were established by NMR (1H & 13C) and high-resolution mass spectra, which were further supported by single crystal X-ray analysis of 4c and 5a.",

author = "Rao, {V. Kameswara} and Pinku Kaswan and Keykavous Parang and Anil Kumar",

year = "2015",

doi = "10.1039/c5ob01734c",

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pages = "11072--11077",

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T1 - Indium triflate catalyzed microwave-assisted alkenylation of methoxyphenols

T2 - Synthesis of indenes and chromenes

AU - Rao, V. Kameswara

AU - Kaswan, Pinku

AU - Parang, Keykavous

AU - Kumar, Anil

PY - 2015

Y1 - 2015

N2 - In(OTf)3 catalyzed microwave-assisted alkenylation of methoxyphenols was investigated. Exclusive formation of either indenes or chromenes was observed depending on the position of the methoxy group on phenol. The structures of 1H-inden-4-ol derivatives (4a-e) and 4H-chromene derivatives (5a-j) were established by NMR (1H & 13C) and high-resolution mass spectra, which were further supported by single crystal X-ray analysis of 4c and 5a.

AB - In(OTf)3 catalyzed microwave-assisted alkenylation of methoxyphenols was investigated. Exclusive formation of either indenes or chromenes was observed depending on the position of the methoxy group on phenol. The structures of 1H-inden-4-ol derivatives (4a-e) and 4H-chromene derivatives (5a-j) were established by NMR (1H & 13C) and high-resolution mass spectra, which were further supported by single crystal X-ray analysis of 4c and 5a.

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JO - Organic and Biomolecular Chemistry

JF - Organic and Biomolecular Chemistry

IS - 45

ER -

Indium triflate catalyzed microwave-assisted alkenylation of methoxyphenols: Synthesis of indenes and chromenes

Abstract

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