Substituted 1,2-diaza-7-oxaspiro[4,4]nonen-6-ones; Preparation, NMR spectra, and crystal structure

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Title:Substituted 1,2-diaza-7-oxaspiro[4,4]nonen-6-ones; Preparation, NMR spectra, and crystal structure
Creators:
Jonas, Jaroslav
Głowiak, Tadeusz
Žák, Zdirad
Trška, Petr
Mazal, Ctibor
Journal or Publication Title:
Collection of Czechoslovak Chemical Communications, 56, 5, pp. 973-983

Abstract

Diazomethane adds to substituted 3-methylene-2-(3<i>H</i>)-dihydrofuranones (<i>Ia-Ii</i>) to give the corresponding title dihydropyrazolospirodihydrofuranones (<i>IIa-IIf, IIi,</i>and<i>IIj</i>) or (<i>IIIa, IIIg, </i> and <i>IIIh</i>). NMR spectra of the adducts are discussed in some detail and the crystal structure has been solved for (4<i>R</i>, 5<i>S</i>)-5-benzoyloxy-1,2-diaza-7-oxaspiro[4.4]non-1-en-6-one (<i>IIa</i>).

Title:Substituted 1,2-diaza-7-oxaspiro[4,4]nonen-6-ones; Preparation, NMR spectra, and crystal structure
Creators:
Jonas, Jaroslav
Głowiak, Tadeusz
Žák, Zdirad
Trška, Petr
Mazal, Ctibor
Divisions:Life and Chemical Sciences > Institute of Organic Chemistry and Biochemistry > Collection of Czechoslovak Chemical Communications
Journal or Publication Title:Collection of Czechoslovak Chemical Communications
Volume:56
Number:5
Page Range:pp. 973-983
ISSN:0010-0765
E-ISSN:1212-6950
Publisher:Institute of Organic Chemistry and Biochemistry
Related URLs:
URLURL Type
http://dx.doi.org/10.1135/cccc19910973UNSPECIFIED
ID Code:5015
Item Type:Article
Deposited On:22 Feb 2010 11:28
Last Modified:22 Feb 2010 10:28

Citation

Jonas, Jaroslav; Głowiak, Tadeusz; Žák, Zdirad; Trška, Petr; Mazal, Ctibor (1991) Substituted 1,2-diaza-7-oxaspiro[4,4]nonen-6-ones; Preparation, NMR spectra, and crystal structure. Collection of Czechoslovak Chemical Communications, 56 (5). pp. 973-983. ISSN 0010-0765

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