Acid Catalyzed Aldehyde‐Indole Reaction, Synthesis of Indole Dyes

Evüp Akgün; Mustafa Tunali

doi:10.1002/ardp.19883210105

Acid Catalyzed Aldehyde‐Indole Reaction, Synthesis of Indole Dyes

Evüp Akgün, Mustafa Tunali

Medicinal Chemistry

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Abstract

The reaction of the indoles 1 with antipyrine‐4‐carbaldehyde 2 in the presence of HBF₄ is investigated. The reaction is limited to reactive indole derivatives. The products contain two molecules of tetrafluoroborate. The antipyryl nucleus is O‐protonated. The structures of the cyanine dyes 3a–3d and 4 were elucidated by spectroscopic methods and elemental analysis.

Original language	English (US)
Pages (from-to)	9-11
Number of pages	3
Journal	Archiv der Pharmazie
Volume	321
Issue number	1
DOIs	https://doi.org/10.1002/ardp.19883210105
State	Published - 1988

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title = "Acid Catalyzed Aldehyde‐Indole Reaction, Synthesis of Indole Dyes",

abstract = "The reaction of the indoles 1 with antipyrine‐4‐carbaldehyde 2 in the presence of HBF4 is investigated. The reaction is limited to reactive indole derivatives. The products contain two molecules of tetrafluoroborate. The antipyryl nucleus is O‐protonated. The structures of the cyanine dyes 3a–3d and 4 were elucidated by spectroscopic methods and elemental analysis.",

author = "Ev{\"u}p Akg{\"u}n and Mustafa Tunali",

year = "1988",

doi = "10.1002/ardp.19883210105",

language = "English (US)",

volume = "321",

pages = "9--11",

journal = "Archiv der Pharmazie",

issn = "0365-6233",

publisher = "Wiley-VCH Verlag",

number = "1",

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TY - JOUR

T1 - Acid Catalyzed Aldehyde‐Indole Reaction, Synthesis of Indole Dyes

AU - Akgün, Evüp

AU - Tunali, Mustafa

PY - 1988

Y1 - 1988

N2 - The reaction of the indoles 1 with antipyrine‐4‐carbaldehyde 2 in the presence of HBF4 is investigated. The reaction is limited to reactive indole derivatives. The products contain two molecules of tetrafluoroborate. The antipyryl nucleus is O‐protonated. The structures of the cyanine dyes 3a–3d and 4 were elucidated by spectroscopic methods and elemental analysis.

AB - The reaction of the indoles 1 with antipyrine‐4‐carbaldehyde 2 in the presence of HBF4 is investigated. The reaction is limited to reactive indole derivatives. The products contain two molecules of tetrafluoroborate. The antipyryl nucleus is O‐protonated. The structures of the cyanine dyes 3a–3d and 4 were elucidated by spectroscopic methods and elemental analysis.

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U2 - 10.1002/ardp.19883210105

DO - 10.1002/ardp.19883210105

M3 - Article

AN - SCOPUS:84984201214

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JO - Archiv der Pharmazie

JF - Archiv der Pharmazie

SN - 0365-6233

IS - 1

ER -

Acid Catalyzed Aldehyde‐Indole Reaction, Synthesis of Indole Dyes

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