Photochromism of tetrahydroindolizines. Part XIV: synthesis of cis-fixed conjugated photochromic pyridazinopyrrolo [1,2-b]isoquinolines incorporating carbon-rich linkers

被引：13

作者：

Ahmed, Saleh A. ^{[1
,2
]}

Khairou, Khalid S. ^{[1
]}

Asghar, Basim H. ^{[1
]}

Muathen, Hussni A. ^{[1
]}

Nahas, Nariman M. A. ^{[1
]}

Alshareef, Hossa F. ^{[1
]}

机构：

[1] Umm Al Qura Univ, Fac Sci Appl, Dept Chem, Makkah Al Mokarramma 21955, Saudi Arabia

[2] Assiut Univ, Fac Sci, Dept Chem, Assiut 17516, Egypt

来源：

TETRAHEDRON LETTERS | 2014年 / 55卷 / 14期

关键词：

Photochromism; Tetrahydroindolizine (THI); Linker-conjugates; Rapid system; cis-Fixed; Kinetics; REFRACTIVE-INDEX CHANGE; PHOTOPHYSICAL BEHAVIOR; NONDESTRUCTIVE READOUT; DIHYDROINDOLIZINES; LIGHT; DERIVATIVES; POLYMERS; SWITCH; REDOX;

D O I：

10.1016/j.tetlet.2014.02.078

中图分类号：

O62 [有机化学];

学科分类号：

070303 ; 081704 ;

摘要：

New carbon-rich photochromic tetrahydroindolizines (THIs) bearing dihydroisoquinoline derivatives as heterocyclic bases (region B) have been synthesized via different chemical and photochemical pathways. Three alternative pathways for the synthesis of the target photochromic THI-based pyridazinopyrrolo-[1,2-b]isoquinolines via in situ trapping with hydrazine hydrate have been established. In order to obtain high product yields, different Sonogashira-mediated coupling reactions have been optimized. Low temperature multichannel UV-vis and flash photolysis techniques were used to detect the photochromic and kinetic properties of the synthesized system. (C) 2014 Elsevier Ltd. All rights reserved.

引用

页码：2190 / 2196

页数：7

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