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New tricyclic products from the reaction of 2,3-butanedione and ethnolamine4

✍ Scribed by Norberto Farfán; Rosa Santillan; Julián Guzmán; Belinda Castillo; Aurelio Ortiz; Jean-Claude Daran; Francis Robert; Sabine Halut

Publisher
Elsevier Science
Year
1994
Tongue
French
Weight
611 KB
Volume
50
Category
Article
ISSN
0040-4020

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✦ Synopsis

Reinvestigation of the reaction of 2,3_butanedione vith ethanolamine afforded the known cis-4a,8a-dimethyl[l,4]-oxasino-

[3,2-b][1,4]

oxazine as vell as tvo nev tricyslic products: 12,13-dimethyl-2,7-dioxa-5, lO-diaza_tricycle[4,4,4,0' ]trans-tetradecan-12-13-diol, and N,N'-[(4",5"-dimethyl) 1",2"-phenylenel-2,2'-dimethylbisoxasolidine as established by X-ray analysis.

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## Abstract Difuro[3,2‐__c__:3′,2′‐__e__]pyridine 1, a new tricyclic heteroaromatic, has been prepared for the first time. Bromination of 1 with molecular bromine gave 3‐bromo 7, 8‐bromo 7′ and 3,8‐dibromo derivative 8; nitration with fuming nitric acid yielded 2‐nitro compound 9, while nitration w