A series of three (E)-2-alkylidene-1,4-di-p-tosyl-1,2,3,4-tetrahydroquinoxaline compounds

Surajit Banerjee, Alok K. Mukherjee, Rupa Mukhopadhyay, Nitya G. Kundu, Alan J. Welch

Research output: Contribution to journalArticle

Abstract

The three title quinoxaline derivatives, (E)-2-(4-methylbenzylidene)-1,4-di-p-tosyl-1,2,3,4-tetrahydroquinoxaline, C30H28N2O4S2, (II), (E)-2-(4-methoxybenzylidene)-1,4-di-ptosyl-1,2,3,4-tetrahydroquinoxaline, C30H28N2O5S2, (III), and (E)-2-(3-chlorobenzylidene)-1,4-di-p-tosyl-1,2,3,4-tetrahydroquinoxaline, C29H25ClN2O4S2, (IV), were synthesized by palladium-catalyzed hetero-annulation. The E configuration of the exocyclic double bond in the three compounds has been established by the present X-ray study. The saturated part of the quinoxaline moiety in all three compounds assumes a distorted chair conformation. The numerical descriptors indicate a high degree of isostructurality between compounds (II) and (III), but no isostructurality with compound (IV).

Original languageEnglish
Pages (from-to)861-864
Number of pages4
JournalActa Crystallographica Section C: Crystal Structure Communications
Volume57
Issue number7
DOIs
Publication statusPublished - Jul 2001

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Quinoxalines
Palladium
Conformations
Derivatives
X rays

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Banerjee, Surajit ; Mukherjee, Alok K. ; Mukhopadhyay, Rupa ; Kundu, Nitya G. ; Welch, Alan J. / A series of three (E)-2-alkylidene-1,4-di-p-tosyl-1,2,3,4-tetrahydroquinoxaline compounds. In: Acta Crystallographica Section C: Crystal Structure Communications. 2001 ; Vol. 57, No. 7. pp. 861-864.
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title = "A series of three (E)-2-alkylidene-1,4-di-p-tosyl-1,2,3,4-tetrahydroquinoxaline compounds",
abstract = "The three title quinoxaline derivatives, (E)-2-(4-methylbenzylidene)-1,4-di-p-tosyl-1,2,3,4-tetrahydroquinoxaline, C30H28N2O4S2, (II), (E)-2-(4-methoxybenzylidene)-1,4-di-ptosyl-1,2,3,4-tetrahydroquinoxaline, C30H28N2O5S2, (III), and (E)-2-(3-chlorobenzylidene)-1,4-di-p-tosyl-1,2,3,4-tetrahydroquinoxaline, C29H25ClN2O4S2, (IV), were synthesized by palladium-catalyzed hetero-annulation. The E configuration of the exocyclic double bond in the three compounds has been established by the present X-ray study. The saturated part of the quinoxaline moiety in all three compounds assumes a distorted chair conformation. The numerical descriptors indicate a high degree of isostructurality between compounds (II) and (III), but no isostructurality with compound (IV).",
author = "Surajit Banerjee and Mukherjee, {Alok K.} and Rupa Mukhopadhyay and Kundu, {Nitya G.} and Welch, {Alan J.}",
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A series of three (E)-2-alkylidene-1,4-di-p-tosyl-1,2,3,4-tetrahydroquinoxaline compounds. / Banerjee, Surajit; Mukherjee, Alok K.; Mukhopadhyay, Rupa; Kundu, Nitya G.; Welch, Alan J.

In: Acta Crystallographica Section C: Crystal Structure Communications, Vol. 57, No. 7, 07.2001, p. 861-864.

Research output: Contribution to journalArticle

TY - JOUR

T1 - A series of three (E)-2-alkylidene-1,4-di-p-tosyl-1,2,3,4-tetrahydroquinoxaline compounds

AU - Banerjee, Surajit

AU - Mukherjee, Alok K.

AU - Mukhopadhyay, Rupa

AU - Kundu, Nitya G.

AU - Welch, Alan J.

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N2 - The three title quinoxaline derivatives, (E)-2-(4-methylbenzylidene)-1,4-di-p-tosyl-1,2,3,4-tetrahydroquinoxaline, C30H28N2O4S2, (II), (E)-2-(4-methoxybenzylidene)-1,4-di-ptosyl-1,2,3,4-tetrahydroquinoxaline, C30H28N2O5S2, (III), and (E)-2-(3-chlorobenzylidene)-1,4-di-p-tosyl-1,2,3,4-tetrahydroquinoxaline, C29H25ClN2O4S2, (IV), were synthesized by palladium-catalyzed hetero-annulation. The E configuration of the exocyclic double bond in the three compounds has been established by the present X-ray study. The saturated part of the quinoxaline moiety in all three compounds assumes a distorted chair conformation. The numerical descriptors indicate a high degree of isostructurality between compounds (II) and (III), but no isostructurality with compound (IV).

AB - The three title quinoxaline derivatives, (E)-2-(4-methylbenzylidene)-1,4-di-p-tosyl-1,2,3,4-tetrahydroquinoxaline, C30H28N2O4S2, (II), (E)-2-(4-methoxybenzylidene)-1,4-di-ptosyl-1,2,3,4-tetrahydroquinoxaline, C30H28N2O5S2, (III), and (E)-2-(3-chlorobenzylidene)-1,4-di-p-tosyl-1,2,3,4-tetrahydroquinoxaline, C29H25ClN2O4S2, (IV), were synthesized by palladium-catalyzed hetero-annulation. The E configuration of the exocyclic double bond in the three compounds has been established by the present X-ray study. The saturated part of the quinoxaline moiety in all three compounds assumes a distorted chair conformation. The numerical descriptors indicate a high degree of isostructurality between compounds (II) and (III), but no isostructurality with compound (IV).

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