2,2′-Bi(1H-indolyl)-3,3′-dicarbaldehydes, prepared from lH-indole-3-carbaldehydes by exploiting SET methodology, served as the key compound for synthesizing indolo[2,3-a]carbazoles as well as nitrogen macroheterocycles. Condensation of 2,2′-bi(1H-indolyl)-3,3′- dicarbaldehyde with aliphatic diamines produced Schiff's base type compounds possessing a 10-14-membered ring.

A BANERJI

D BANDYOPADHYAY

B BASAK

P K BISWAS

J BANERJI

A CHATTERJEE

University of Calcutta (informally known as Calcutta University or CU) is a collegiate public state university located in Kolkata, West Bengal, India.&nbsp;Within India it is recognized as a &quot;Five-Star University&quot; and accredited &quot;A&quot; Grade by National Assessment and Accreditation Council.

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The University of Calcutta has secured the Fifth position among the Universities of India in the prestigious &quot;Indian University Ranking 2019&quot; list, released by the NIRF of the Ministry of Human Resource Development, Government of India.

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It was established on 24 January 1857, and was one of the first institutions in Asia to be established as a multidisciplinary and Western-style university. Its alumni and faculty include several heads of state, heads of government, social reformers, prominent artists, only academy award winner and Dirac medal winner in India, many Fellows of the Royal Society and five Nobel laureates as of 2019 which is highest in South Asia.

University Of Calcutta

Bulletin of the Chemical Society of Japan

Aromatic trifluoroacetyl derivatives on treatment with single electron transfer (SET) reagent, sodium naphthalenide, yield symmetrical defluorinated dimers, whereas for aliphatic trifluoroacetyl compounds the reaction usually fails. Investigations have been made for different substituents as well as for similar types of chloro and bromo compounds to establish the scope of the reaction. © 2005 Elsevier Ltd. All rights reserved.

Tetrahedron Letters

Effect of sodium naphthalenide, a key SET reagent, on trifluoroacetyl derivatives

Synthesis and structure determination of 3-(naphth-1-ylmethyl)indole are reported. The molecular and crystal structures together with the molecular formula were determined by spectral and single crystal X-ray studies. X-ray crystallography revealed the presence of two conformers arising from the flipping of the naphthalene unit. The crystal of the compound belongs to the triclinic crystal system and space group P1̄. Crystal data are as follows: a = 10.302(5) Å, b = 12.522(4) Å, c = 13.383(4) Å, α = 111.9(1)°, β = 116.86(6)°, γ = 71.65(5)°; V = 1726.429 Å3; Z = 4. The final R and Rw are R = 0.0744 (on observed F's); R = 0.0924 (all F data), R w = 0.1757 (observed F 2) and R w = 0.1834 (all F 2 data). © 2005 Springer Science+Business Media, Inc.

Journal	Bulletin of the Chemical Society of Japan
Publisher	CHEMICAL SOC JAPAN
ISSN	0009-2673