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Zur Cyclisierung von Salicylsäureamiden und Salicylohydroxamsäuren mit 1,1′-Carbonyldiimidazol (1981)

Geffken, Detlef

Weinheim : Wiley-Blackwell

Liebigs Annalen 1981 (1981), S. 1513-1514

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ISSN: 0170-2041

Keywords: Chemistry ; Organic Chemistry

Source: Wiley InterScience Backfile Collection 1832-2000

Topics: Chemistry and Pharmacology

Description / Table of Contents: The Cyclisation of Salicylamides and Salicylohydroxamic Acids with 1,1′-CarbonyldiimidazoleCyclisation of salicylamides 1a, b and salicylohydroxamic acids 1c, d with 1,1′-carbonyldiimid-azole (2) causes formation of 2H-1,3-benzoxazine-2,4(3H)-diones 4a-d. In contrast to statements in the literature isoimides 3 or isoxazoles 5 could not be isolated.

Notes: Salicylsäureamide 1a, b und Salicylohydroxamsäuren 1c, d cyclisieren mit 1,1′-Carbonyldiimid-azol (2) zu 2H-1,3-Benzoxazin-2,4(3H)-dionen 4a-d. Isoimide 3 oder Isoxazole 5 konnten entgegen Literaturangaben nicht isoliert werden.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1002/jlac.198119810824

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