Persistent carbocations from 4,4′-dimethylaminodiphenylethylenes within CaY zeolite

Intrazeolite-water controls the structure of the carbocation

Smriti Koodanjeri, Vaidhyanathan Ramamurthy

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

Inclusion of 4,4′-dimethylaminodiphenylethylene and related olefins within activated CaY results in the formation of persistent monomer carbocations. The structure of the cation, consequently the color of the zeolite, is controlled by water molecules present within zeolites. Under 'dry' conditions the zeolite is light yellow and under 'wet' conditions it is blue colored. Blue color results from the quininoidal structure adopted by 1,1-bis-(4-dimethylaminophenyl)ethyl cation through participation of the lone pair electrons present on the amino substituent at the para position.

Original languageEnglish
Pages (from-to)1615-1618
Number of pages4
JournalTetrahedron Letters
Volume44
Issue number8
DOIs
StatePublished - Feb 17 2003
Externally publishedYes

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Zeolites
Cations
Water
Color
Alkenes
Monomers
Electrons
Molecules

Keywords

  • Carbocation
  • Diarylethylenes
  • Zeolite

ASJC Scopus subject areas

  • Biochemistry
  • Organic Chemistry
  • Drug Discovery

Cite this

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abstract = "Inclusion of 4,4′-dimethylaminodiphenylethylene and related olefins within activated CaY results in the formation of persistent monomer carbocations. The structure of the cation, consequently the color of the zeolite, is controlled by water molecules present within zeolites. Under 'dry' conditions the zeolite is light yellow and under 'wet' conditions it is blue colored. Blue color results from the quininoidal structure adopted by 1,1-bis-(4-dimethylaminophenyl)ethyl cation through participation of the lone pair electrons present on the amino substituent at the para position.",
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T1 - Persistent carbocations from 4,4′-dimethylaminodiphenylethylenes within CaY zeolite

T2 - Intrazeolite-water controls the structure of the carbocation

AU - Koodanjeri, Smriti

AU - Ramamurthy, Vaidhyanathan

PY - 2003/2/17

Y1 - 2003/2/17

N2 - Inclusion of 4,4′-dimethylaminodiphenylethylene and related olefins within activated CaY results in the formation of persistent monomer carbocations. The structure of the cation, consequently the color of the zeolite, is controlled by water molecules present within zeolites. Under 'dry' conditions the zeolite is light yellow and under 'wet' conditions it is blue colored. Blue color results from the quininoidal structure adopted by 1,1-bis-(4-dimethylaminophenyl)ethyl cation through participation of the lone pair electrons present on the amino substituent at the para position.

AB - Inclusion of 4,4′-dimethylaminodiphenylethylene and related olefins within activated CaY results in the formation of persistent monomer carbocations. The structure of the cation, consequently the color of the zeolite, is controlled by water molecules present within zeolites. Under 'dry' conditions the zeolite is light yellow and under 'wet' conditions it is blue colored. Blue color results from the quininoidal structure adopted by 1,1-bis-(4-dimethylaminophenyl)ethyl cation through participation of the lone pair electrons present on the amino substituent at the para position.

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KW - Diarylethylenes

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