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New method for the preparation of 3-diazo-1,3-dihydroindol-2-ones

โœ Scribed by Muzalevskiy, V. M.; Balenkova, E. S.; Shastin, A. V.; Magerramov, A. M.; Shikhaliev, N. G.; Nenajdenko, V. G.


Book ID
118809855
Publisher
Springer
Year
2011
Tongue
English
Weight
219 KB
Volume
60
Category
Article
ISSN
1573-9171

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โœ John C Brahms; William P Dailey ๐Ÿ“‚ Article ๐Ÿ“… 1990 ๐Ÿ› Elsevier Science ๐ŸŒ French โš– 230 KB

When diazoketones 3a and 3b are pyrolysed at 43oOC and 10S4 torr, they undergo loss of N2 followed by Wolff rearrangement and loss of furan by retro Diels-Alder reaction to yield the desired propadienones l(a.b). If argon is added to the pyrolysate mixture, these reactive compounds can be trapped un