A NEW CLASS OF PHOTOCHROMIC COMPOUNDS EXEMPLIFIED BY E-5-DICYANOMETHYLENE-4-(DIALKYL AND DICYCLOALKYL)METHYLENE[1-(2,5-METHYL-3-FURYL) AND (2-METHYL-5-PHENYL-3-THIENYL)ETHYLIDENE]TETRAHYDROFURAN-2-ONES

被引:16
作者
HELLER, HG
HUGHES, DS
HURSTHOUSE, MB
KOH, KVS
机构
关键词
D O I
10.1039/c39940002713
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
The title photochromic compounds 4 photocyclise to thermally stable blue and infrared active 7-dicyanomethylene-5-oxo-5,7,8,8a-tetrahaydro-2-substituted-4,8a-dimethylfuro[3,4-f]benzofurans or benzothiophenes 5 which absorb at longer wavelengths (>100 nm) than the photocyclised compounds 2 from the corresponding photochromic fulgides 1.
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页码:2713 / 2714
页数:2
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