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3H-Naphtho[2,1-b]pyrans as Photochromic Dichroic Dyes and Optical Articles Containing Them

Aiken, Stuart, Cano, Jean Paul, Gabbutt, Christopher D., Heron, B. Mark, Kosa, Tamas, Su, Linli, Sukhomlinova, Ludmila and Taheri, Bahman (2008) 3H-Naphtho[2,1-b]pyrans as Photochromic Dichroic Dyes and Optical Articles Containing Them. WO/2008080226.

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Abstract

A naphthopyran compound represented by the formula (I): wherein: n1,
n2, p, q is an integer comprised from 0 to 5 inclusive; m is an integer
comprised from 0 to 4 inclusive; R1 and R2 represent a group selected from halogen,
-Ra, -OH, -ORa, - SH, -SRa, -NH2, -NRaRa1,
-NRbRc, -CO-Ra, and -CO2Ra1,
wherein Ra, Ra1, Rb and Rc, are as defined
in the description ; R3 represents a group selected from halogen, -Ra,
-OH, -ORa, -SH, -SRa, -NH2, and -NraRa1;
R4 represents a group selected from halogen, -Ra, -OH, -ORa,
-SH, -SRa, -NH2, -NRaRa1, -CO-Ra,
and -CO2Ra1; R5 represents a group selected from:
o halogen, -Ra, -OH, -ORa, -SH, -SRa, -NH2,
and -NRaRa1, wherein Ra and Ra1 are
as defined hereinbefore, o or when q is equal to 2, then two R5 together
represent further a group -O-(CH2)q1-O- wherein ql represents
an integer comprised from 1 to 3 inclusive.

Item Type: Patent
Subjects: Q Science > Q Science (General)
Q Science > QD Chemistry
Schools: School of Applied Sciences
Related URLs:
Depositing User: Sara Taylor
Date Deposited: 03 Jan 2013 13:33
Last Modified: 03 Jan 2013 13:33
URI: http://eprints.hud.ac.uk/id/eprint/16417

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