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Synthesis of 3-Substituted-7-Dialkylamino-1, 4-Benzoxazin-2-Ketones(PDF)

《南京理工大学学报》(自然科学版)[ISSN:1005-9830/CN:32-1397/N]

Issue:
1998年04期
Page:
72-75
Research Field:
Publishing date:

Info

Title:
Synthesis of 3-Substituted-7-Dialkylamino-1, 4-Benzoxazin-2-Ketones
Author(s):
Cai Chun Lu Chunxu
School of Chemical Engineering, NUST, Nanjing 210094
Keywords:
fluorescene dye alkylat ion nitr osat ion m-aminophenol
PACS:
TQ617.3
DOI:
-
Abstract:
3-subst ituted-7-dialkylamino -1, 4-benzox azin-2-Ketones hav e been synthesized f rom the raw material m-aminophenol by N-alky lation w ith R2SO4 , nit rosat ion w ith Na NO2, reduct ion w ith NH2NH2 õH2O under N 2 f low and fur ther cyclizat ion w ith A-keto ester s in ethno l. These compounds are very useful in sy nthesis o f new ty pe fluor escence dy es, the abso rpt ion and emissio n bands o f benzox azino ne dyes prepared from these compounds could be changed in a w ide rang e w ith subst ituted gr oup and solvent ef fect, and the pro pert ies of these compounds have al so been discussed.

References:

1 T rebaul C , Ro ng ali J, Gar nier F, et al. Synthesis and fluo rescence analysis of 3-substituted 7-dialkylamino-2H -1, 4-benzo x azin-2-ones. Bull Chem So c Jpn, 1987, 60: 2657
2 Bris M T L . Synthesis and pr opert ies o f some 7-dimethylamino-1, 4-benzox azin-2-ones. J Heter ocy clic Chem, 1985, 22: 1 275
3 Zepp C M. Squary lium dyes and pr oducts and pro cess usiny same. U S Patent, 5 211 885,1993
4 段长强, 孟庆芳, 张泰等, 现代化学试剂手册, 北京: 化学工业出版社, 1988. 596
5 章思规. 精细有机化学品技术手册( 上) . 北京: 科学出版社, 1993, 756

Memo

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Last Update: 2013-03-29