K. S. Swaminathan

R. Sai Ganesh

Chittoor Sivaramakrishnan Venkatachalam

Kalapattukuppuswamy Kuppuswamy B. Balasubramanian

IIT Madras is a public technical and research university located in Chennai, Tamil Nadu. Founded in 1959, it is recognised as an Institute of National Importance.

IIT Madras has been ranked as the top engineering institute in India for four years in a row by the National Institutional Ranking Framework of the MHRD

It currently offers undergraduate, postgraduate and research degrees across 16 disciplines in Engineering, Sciences, Humanities and Management. About 596 faculty belonging to science and engineering departments and centres of the Institute are engaged in teaching, research and industrial consultancy.

IIT Madras

A novel photochemical cyclisation of 4-chloro-3-(N-Aryliminomethyl) (2H)benzopyrans and benzothiopyrans

Tetrahedron Letters

Intramolecular substitutions leading to cyclizations with the ejection of chlorine have been noticed during mass spectral fragmentation of 4‐chloro‐3‐(N‐aryliminomethyl) (2H) benzopyrans and benzothiopyrans. Very interesting ortho effects involving intramolecular substitutions have also been observed in 6‐methyl‐4‐diloro‐3‐[N‐(2‐methoxyphenyliminomethyl)] (2H) benzopyran and 6‐methyl‐4‐chloro‐3‐[N‐(2‐chlorophenyliminomethyl)]‐(2H) benzopyran. The proposed fragmentation mechanisms have been supported by the accurate mass measurements and linked scan studies. Copyright © 1987 John Wiley & Sons, Ltd.

Organic Mass Spectrometry

Electron impact induced cyclizations in 4‐chioro‐3‐(N‐aryliminomethyl) (2H) benzopyrans and benzothiopyrans

Journal of the American Chemical Society

Reaction pathways for the photochemical conversion of o-substituted benzylideneanilines to azoles

Journal	Tetrahedron Letters
ISSN	00404039
Open Access	No