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Photochemical addition of butadiene to cyclopentadiene

โœ Scribed by G. Sartori; V. Turba; A. Valvassori; M. Riva

Publisher
Elsevier Science
Year
1966
Tongue
French
Weight
281 KB
Volume
7
Category
Article
ISSN
0040-4039

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โœฆ Synopsis

Some oompounda derived from the stneitistd photoohe-mica1 addition of butadiene to its homologues have been dezoribed in a previous communication (1).

In the oourse of the synthesis of non-oonjugated disnsz, the study of the zensitized photoohemioal addition of butadiene to oyolopentadiene was subsequently undertaken.

In thiz oo~~ioation we describe the mixed addition produotz obtained from euoh reaction, using benzophenont aa tenti= tizer, and a produot (V) that oan be obtained from one of them by thermal re-arrangtment~ Table reports the reaction oonditiona, the produots identified, their percentage In the total mixture of dimers and pbyzioal con&ants of I, II, III, IV and V, amow which

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Diels-alder addition of o-benzoquinones
Diels-alder addition of o-benzoquinones to cyclopentadiene
โœ D.D. Chapman; H.S. Wilgus III; J.W. Gates Jr. ๐Ÿ“‚ Article ๐Ÿ“… 1966 ๐Ÿ› Elsevier Science ๐ŸŒ French โš– 194 KB

o-Bensoquinones can behave either as dienes or as dienophiles in Diels-Alder reactions. Usually, however, they react as dienes, particularly if they are substituted. (1) Recently we described(") the isolation of Diels-Alder adducts from cyclopentadiene and three o-bensoquinones. In each case, the qu